21250320

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1$

素因数の和:182

約数の個数: 240

約数和(自身を含む): 83119680

約数和(自身を除く): 61869360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 49, 52, 56, 60, 65, 70, 78, 80, 84, 91, 98, 104, 105, 112, 120, 130, 139, 140, 147, 156, 168, 182, 195, 196, 208, 210, 240, 245, 260, 273, 278, 280, 294, 312, 336, 364, 390, 392, 417, 420, 455, 490, 520, 546, 556, 560, 588, 624, 637, 695, 728, 735, 780, 784, 834, 840, 910, 973, 980, 1040, 1092, 1112, 1176, 1274, 1365, 1390, 1456, 1470, 1560, 1668, 1680, 1807, 1820, 1911, 1946, 1960, 2085, 2184, 2224, 2352, 2548, 2730, 2780, 2919, 2940, 3120, 3185, 3336, 3614, 3640, 3822, 3892, 3920, 4170, 4368, 4865, 5096, 5421, 5460, 5560, 5838, 5880, 6370, 6672, 6811, 7228, 7280, 7644, 7784, 8340, 9035, 9555, 9730, 10192, 10842, 10920, 11120, 11676, 11760, 12649, 12740, 13622, 14456, 14595, 15288, 15568, 16680, 18070, 19110, 19460, 20433, 21684, 21840, 23352, 25298, 25480, 27105, 27244, 28912, 29190, 30576, 33360, 34055, 36140, 37947, 38220, 38920, 40866, 43368, 46704, 50596, 50960, 54210, 54488, 58380, 63245, 68110, 72280, 75894, 76440, 77840, 81732, 86736, 88543, 101192, 102165, 108420, 108976, 116760, 126490, 136220, 144560, 151788, 152880, 163464, 177086, 189735, 202384, 204330, 216840, 233520, 252980, 265629, 272440, 303576, 326928, 354172, 379470, 408660, 433680, 442715, 505960, 531258, 544880, 607152, 708344, 758940, 817320, 885430, 1011920, 1062516, 1328145, 1416688, 1517880, 1634640, 1770860, 2125032, 2656290, 3035760, 3541720, 4250064, 5312580, 7083440, 10625160, 21250320]

約数ペア:

[(1, 21250320), (2, 10625160), (3, 7083440), (4, 5312580), (5, 4250064), (6, 3541720), (7, 3035760), (8, 2656290), (10, 2125032), (12, 1770860), (13, 1634640), (14, 1517880), (15, 1416688), (16, 1328145), (20, 1062516), (21, 1011920), (24, 885430), (26, 817320), (28, 758940), (30, 708344), (35, 607152), (39, 544880), (40, 531258), (42, 505960), (48, 442715), (49, 433680), (52, 408660), (56, 379470), (60, 354172), (65, 326928), (70, 303576), (78, 272440), (80, 265629), (84, 252980), (91, 233520), (98, 216840), (104, 204330), (105, 202384), (112, 189735), (120, 177086), (130, 163464), (139, 152880), (140, 151788), (147, 144560), (156, 136220), (168, 126490), (182, 116760), (195, 108976), (196, 108420), (208, 102165), (210, 101192), (240, 88543), (245, 86736), (260, 81732), (273, 77840), (278, 76440), (280, 75894), (294, 72280), (312, 68110), (336, 63245), (364, 58380), (390, 54488), (392, 54210), (417, 50960), (420, 50596), (455, 46704), (490, 43368), (520, 40866), (546, 38920), (556, 38220), (560, 37947), (588, 36140), (624, 34055), (637, 33360), (695, 30576), (728, 29190), (735, 28912), (780, 27244), (784, 27105), (834, 25480), (840, 25298), (910, 23352), (973, 21840), (980, 21684), (1040, 20433), (1092, 19460), (1112, 19110), (1176, 18070), (1274, 16680), (1365, 15568), (1390, 15288), (1456, 14595), (1470, 14456), (1560, 13622), (1668, 12740), (1680, 12649), (1807, 11760), (1820, 11676), (1911, 11120), (1946, 10920), (1960, 10842), (2085, 10192), (2184, 9730), (2224, 9555), (2352, 9035), (2548, 8340), (2730, 7784), (2780, 7644), (2919, 7280), (2940, 7228), (3120, 6811), (3185, 6672), (3336, 6370), (3614, 5880), (3640, 5838), (3822, 5560), (3892, 5460), (3920, 5421), (4170, 5096), (4368, 4865)]