28647640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1013}}^1$

素因数の和:1132

約数の個数: 64

約数和(自身を含む): 74468160

約数和(自身を除く): 45820520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 101, 140, 202, 280, 404, 505, 707, 808, 1010, 1013, 1414, 2020, 2026, 2828, 3535, 4040, 4052, 5065, 5656, 7070, 7091, 8104, 10130, 14140, 14182, 20260, 28280, 28364, 35455, 40520, 56728, 70910, 102313, 141820, 204626, 283640, 409252, 511565, 716191, 818504, 1023130, 1432382, 2046260, 2864764, 3580955, 4092520, 5729528, 7161910, 14323820, 28647640]

約数ペア:

[(1, 28647640), (2, 14323820), (4, 7161910), (5, 5729528), (7, 4092520), (8, 3580955), (10, 2864764), (14, 2046260), (20, 1432382), (28, 1023130), (35, 818504), (40, 716191), (56, 511565), (70, 409252), (101, 283640), (140, 204626), (202, 141820), (280, 102313), (404, 70910), (505, 56728), (707, 40520), (808, 35455), (1010, 28364), (1013, 28280), (1414, 20260), (2020, 14182), (2026, 14140), (2828, 10130), (3535, 8104), (4040, 7091), (4052, 7070), (5065, 5656)]