21490199280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{142811}}^1$

素因数の和:142860

約数の個数: 240

約数和(自身を含む): 82876659840

約数和(自身を除く): 61386460560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 19, 20, 22, 24, 30, 33, 36, 38, 40, 44, 45, 48, 55, 57, 60, 66, 72, 76, 80, 88, 90, 95, 99, 110, 114, 120, 132, 144, 152, 165, 171, 176, 180, 190, 198, 209, 220, 228, 240, 264, 285, 304, 330, 342, 360, 380, 396, 418, 440, 456, 495, 528, 570, 627, 660, 684, 720, 760, 792, 836, 855, 880, 912, 990, 1045, 1140, 1254, 1320, 1368, 1520, 1584, 1672, 1710, 1881, 1980, 2090, 2280, 2508, 2640, 2736, 3135, 3344, 3420, 3762, 3960, 4180, 4560, 5016, 6270, 6840, 7524, 7920, 8360, 9405, 10032, 12540, 13680, 15048, 16720, 18810, 25080, 30096, 37620, 50160, 75240, 142811, 150480, 285622, 428433, 571244, 714055, 856866, 1142488, 1285299, 1428110, 1570921, 1713732, 2142165, 2284976, 2570598, 2713409, 2856220, 3141842, 3427464, 4284330, 4712763, 5141196, 5426818, 5712440, 6283684, 6426495, 6854928, 7854605, 8140227, 8568660, 9425526, 10282392, 10853636, 11424880, 12567368, 12852990, 13567045, 14138289, 15709210, 16280454, 17137320, 18851052, 20564784, 21707272, 23563815, 24420681, 25134736, 25705980, 27134090, 28276578, 29847499, 31418420, 32560908, 34274640, 37702104, 40701135, 43414544, 47127630, 48841362, 51411960, 54268180, 56553156, 59694998, 62836840, 65121816, 70691445, 75404208, 81402270, 89542497, 94255260, 97682724, 102823920, 108536360, 113106312, 119389996, 122103405, 125673680, 130243632, 141382890, 149237495, 162804540, 179084994, 188510520, 195365448, 217072720, 226212624, 238779992, 244206810, 268627491, 282765780, 298474990, 325609080, 358169988, 377021040, 390730896, 447712485, 477559984, 488413620, 537254982, 565531560, 596949980, 651218160, 716339976, 895424970, 976827240, 1074509964, 1131063120, 1193899960, 1343137455, 1432679952, 1790849940, 1953654480, 2149019928, 2387799920, 2686274910, 3581699880, 4298039856, 5372549820, 7163399760, 10745099640, 21490199280]

約数ペア:

[(1, 21490199280), (2, 10745099640), (3, 7163399760), (4, 5372549820), (5, 4298039856), (6, 3581699880), (8, 2686274910), (9, 2387799920), (10, 2149019928), (11, 1953654480), (12, 1790849940), (15, 1432679952), (16, 1343137455), (18, 1193899960), (19, 1131063120), (20, 1074509964), (22, 976827240), (24, 895424970), (30, 716339976), (33, 651218160), (36, 596949980), (38, 565531560), (40, 537254982), (44, 488413620), (45, 477559984), (48, 447712485), (55, 390730896), (57, 377021040), (60, 358169988), (66, 325609080), (72, 298474990), (76, 282765780), (80, 268627491), (88, 244206810), (90, 238779992), (95, 226212624), (99, 217072720), (110, 195365448), (114, 188510520), (120, 179084994), (132, 162804540), (144, 149237495), (152, 141382890), (165, 130243632), (171, 125673680), (176, 122103405), (180, 119389996), (190, 113106312), (198, 108536360), (209, 102823920), (220, 97682724), (228, 94255260), (240, 89542497), (264, 81402270), (285, 75404208), (304, 70691445), (330, 65121816), (342, 62836840), (360, 59694998), (380, 56553156), (396, 54268180), (418, 51411960), (440, 48841362), (456, 47127630), (495, 43414544), (528, 40701135), (570, 37702104), (627, 34274640), (660, 32560908), (684, 31418420), (720, 29847499), (760, 28276578), (792, 27134090), (836, 25705980), (855, 25134736), (880, 24420681), (912, 23563815), (990, 21707272), (1045, 20564784), (1140, 18851052), (1254, 17137320), (1320, 16280454), (1368, 15709210), (1520, 14138289), (1584, 13567045), (1672, 12852990), (1710, 12567368), (1881, 11424880), (1980, 10853636), (2090, 10282392), (2280, 9425526), (2508, 8568660), (2640, 8140227), (2736, 7854605), (3135, 6854928), (3344, 6426495), (3420, 6283684), (3762, 5712440), (3960, 5426818), (4180, 5141196), (4560, 4712763), (5016, 4284330), (6270, 3427464), (6840, 3141842), (7524, 2856220), (7920, 2713409), (8360, 2570598), (9405, 2284976), (10032, 2142165), (12540, 1713732), (13680, 1570921), (15048, 1428110), (16720, 1285299), (18810, 1142488), (25080, 856866), (30096, 714055), (37620, 571244), (50160, 428433), (75240, 285622), (142811, 150480)]