280707420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{1033}}^1$

素因数の和:1699

約数の個数: 96

約数和(自身を含む): 900523008

約数和(自身を除く): 619815588

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 647, 1033, 1294, 1941, 2066, 2588, 3099, 3235, 3882, 4132, 4529, 5165, 6198, 6470, 7231, 7764, 9058, 9705, 10330, 12396, 12940, 13587, 14462, 15495, 18116, 19410, 20660, 21693, 22645, 27174, 28924, 30990, 36155, 38820, 43386, 45290, 54348, 61980, 67935, 72310, 86772, 90580, 108465, 135870, 144620, 216930, 271740, 433860, 668351, 1336702, 2005053, 2673404, 3341755, 4010106, 4678457, 6683510, 8020212, 9356914, 10025265, 13367020, 14035371, 18713828, 20050530, 23392285, 28070742, 40101060, 46784570, 56141484, 70176855, 93569140, 140353710, 280707420]

約数ペア:

[(1, 280707420), (2, 140353710), (3, 93569140), (4, 70176855), (5, 56141484), (6, 46784570), (7, 40101060), (10, 28070742), (12, 23392285), (14, 20050530), (15, 18713828), (20, 14035371), (21, 13367020), (28, 10025265), (30, 9356914), (35, 8020212), (42, 6683510), (60, 4678457), (70, 4010106), (84, 3341755), (105, 2673404), (140, 2005053), (210, 1336702), (420, 668351), (647, 433860), (1033, 271740), (1294, 216930), (1941, 144620), (2066, 135870), (2588, 108465), (3099, 90580), (3235, 86772), (3882, 72310), (4132, 67935), (4529, 61980), (5165, 54348), (6198, 45290), (6470, 43386), (7231, 38820), (7764, 36155), (9058, 30990), (9705, 28924), (10330, 27174), (12396, 22645), (12940, 21693), (13587, 20660), (14462, 19410), (15495, 18116)]