78201720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1$

素因数の和:179

約数の個数: 256

約数和(自身を含む): 284544000

約数和(自身を除く): 206342280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 37, 38, 40, 45, 54, 57, 60, 72, 74, 76, 90, 95, 103, 108, 111, 114, 120, 135, 148, 152, 171, 180, 185, 190, 206, 216, 222, 228, 270, 285, 296, 309, 333, 342, 360, 370, 380, 412, 444, 456, 513, 515, 540, 555, 570, 618, 666, 684, 703, 740, 760, 824, 855, 888, 927, 999, 1026, 1030, 1080, 1110, 1140, 1236, 1332, 1368, 1406, 1480, 1545, 1665, 1710, 1854, 1957, 1998, 2052, 2060, 2109, 2220, 2280, 2472, 2565, 2664, 2781, 2812, 3090, 3330, 3420, 3515, 3708, 3811, 3914, 3996, 4104, 4120, 4218, 4440, 4635, 4995, 5130, 5562, 5624, 5871, 6180, 6327, 6660, 6840, 7030, 7416, 7622, 7828, 7992, 8436, 9270, 9785, 9990, 10260, 10545, 11124, 11433, 11742, 12360, 12654, 13320, 13905, 14060, 15244, 15656, 16872, 17613, 18540, 18981, 19055, 19570, 19980, 20520, 21090, 22248, 22866, 23484, 25308, 27810, 28120, 29355, 30488, 31635, 34299, 35226, 37080, 37962, 38110, 39140, 39960, 42180, 45732, 46968, 50616, 52839, 55620, 57165, 58710, 63270, 68598, 70452, 72409, 75924, 76220, 78280, 84360, 88065, 91464, 94905, 102897, 105678, 111240, 114330, 117420, 126540, 137196, 140904, 144818, 151848, 152440, 171495, 176130, 189810, 205794, 211356, 217227, 228660, 234840, 253080, 264195, 274392, 289636, 342990, 352260, 362045, 379620, 411588, 422712, 434454, 457320, 514485, 528390, 579272, 651681, 685980, 704520, 724090, 759240, 823176, 868908, 1028970, 1056780, 1086135, 1303362, 1371960, 1448180, 1737816, 1955043, 2057940, 2113560, 2172270, 2606724, 2896360, 3258405, 3910086, 4115880, 4344540, 5213448, 6516810, 7820172, 8689080, 9775215, 13033620, 15640344, 19550430, 26067240, 39100860, 78201720]

約数ペア:

[(1, 78201720), (2, 39100860), (3, 26067240), (4, 19550430), (5, 15640344), (6, 13033620), (8, 9775215), (9, 8689080), (10, 7820172), (12, 6516810), (15, 5213448), (18, 4344540), (19, 4115880), (20, 3910086), (24, 3258405), (27, 2896360), (30, 2606724), (36, 2172270), (37, 2113560), (38, 2057940), (40, 1955043), (45, 1737816), (54, 1448180), (57, 1371960), (60, 1303362), (72, 1086135), (74, 1056780), (76, 1028970), (90, 868908), (95, 823176), (103, 759240), (108, 724090), (111, 704520), (114, 685980), (120, 651681), (135, 579272), (148, 528390), (152, 514485), (171, 457320), (180, 434454), (185, 422712), (190, 411588), (206, 379620), (216, 362045), (222, 352260), (228, 342990), (270, 289636), (285, 274392), (296, 264195), (309, 253080), (333, 234840), (342, 228660), (360, 217227), (370, 211356), (380, 205794), (412, 189810), (444, 176130), (456, 171495), (513, 152440), (515, 151848), (540, 144818), (555, 140904), (570, 137196), (618, 126540), (666, 117420), (684, 114330), (703, 111240), (740, 105678), (760, 102897), (824, 94905), (855, 91464), (888, 88065), (927, 84360), (999, 78280), (1026, 76220), (1030, 75924), (1080, 72409), (1110, 70452), (1140, 68598), (1236, 63270), (1332, 58710), (1368, 57165), (1406, 55620), (1480, 52839), (1545, 50616), (1665, 46968), (1710, 45732), (1854, 42180), (1957, 39960), (1998, 39140), (2052, 38110), (2060, 37962), (2109, 37080), (2220, 35226), (2280, 34299), (2472, 31635), (2565, 30488), (2664, 29355), (2781, 28120), (2812, 27810), (3090, 25308), (3330, 23484), (3420, 22866), (3515, 22248), (3708, 21090), (3811, 20520), (3914, 19980), (3996, 19570), (4104, 19055), (4120, 18981), (4218, 18540), (4440, 17613), (4635, 16872), (4995, 15656), (5130, 15244), (5562, 14060), (5624, 13905), (5871, 13320), (6180, 12654), (6327, 12360), (6660, 11742), (6840, 11433), (7030, 11124), (7416, 10545), (7622, 10260), (7828, 9990), (7992, 9785), (8436, 9270)]