20128080

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{11981}}^1$

素因数の和:12004

約数の個数: 80

約数和(自身を含む): 71316864

約数和(自身を除く): 51188784

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 11981, 23962, 35943, 47924, 59905, 71886, 83867, 95848, 119810, 143772, 167734, 179715, 191696, 239620, 251601, 287544, 335468, 359430, 419335, 479240, 503202, 575088, 670936, 718860, 838670, 958480, 1006404, 1258005, 1341872, 1437720, 1677340, 2012808, 2516010, 2875440, 3354680, 4025616, 5032020, 6709360, 10064040, 20128080]

約数ペア:

[(1, 20128080), (2, 10064040), (3, 6709360), (4, 5032020), (5, 4025616), (6, 3354680), (7, 2875440), (8, 2516010), (10, 2012808), (12, 1677340), (14, 1437720), (15, 1341872), (16, 1258005), (20, 1006404), (21, 958480), (24, 838670), (28, 718860), (30, 670936), (35, 575088), (40, 503202), (42, 479240), (48, 419335), (56, 359430), (60, 335468), (70, 287544), (80, 251601), (84, 239620), (105, 191696), (112, 179715), (120, 167734), (140, 143772), (168, 119810), (210, 95848), (240, 83867), (280, 71886), (336, 59905), (420, 47924), (560, 35943), (840, 23962), (1680, 11981)]