642696825

素因数分解:

$3^1\times 5^2\times {\mathrm{103}}^1\times {\mathrm{271}}^1\times {\mathrm{307}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 1080375296

約数和(自身を除く): 437678471

約数列:

[1, 3, 5, 15, 25, 75, 103, 271, 307, 309, 515, 813, 921, 1355, 1535, 1545, 2575, 4065, 4605, 6775, 7675, 7725, 20325, 23025, 27913, 31621, 83197, 83739, 94863, 139565, 158105, 249591, 415985, 418695, 474315, 697825, 790525, 1247955, 2079925, 2093475, 2371575, 6239775, 8569291, 25707873, 42846455, 128539365, 214232275, 642696825]

約数ペア:

[(1, 642696825), (3, 214232275), (5, 128539365), (15, 42846455), (25, 25707873), (75, 8569291), (103, 6239775), (271, 2371575), (307, 2093475), (309, 2079925), (515, 1247955), (813, 790525), (921, 697825), (1355, 474315), (1535, 418695), (1545, 415985), (2575, 249591), (4065, 158105), (4605, 139565), (6775, 94863), (7675, 83739), (7725, 83197), (20325, 31621), (23025, 27913)]