28261960

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1439}}^1$

素因数の和:1941

約数の個数: 32

約数和(自身を含む): 63763200

約数和(自身を除く): 35501240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1439, 1964, 2455, 2878, 3928, 4910, 5756, 7195, 9820, 11512, 14390, 19640, 28780, 57560, 706549, 1413098, 2826196, 3532745, 5652392, 7065490, 14130980, 28261960]

約数ペア:

[(1, 28261960), (2, 14130980), (4, 7065490), (5, 5652392), (8, 3532745), (10, 2826196), (20, 1413098), (40, 706549), (491, 57560), (982, 28780), (1439, 19640), (1964, 14390), (2455, 11512), (2878, 9820), (3928, 7195), (4910, 5756)]