28456840

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{6907}}^1$

素因数の和:7021

約数の個数: 32

約数和(自身を含む): 64658880

約数和(自身を除く): 36202040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 6907, 13814, 27628, 34535, 55256, 69070, 138140, 276280, 711421, 1422842, 2845684, 3557105, 5691368, 7114210, 14228420, 28456840]

約数ペア:

[(1, 28456840), (2, 14228420), (4, 7114210), (5, 5691368), (8, 3557105), (10, 2845684), (20, 1422842), (40, 711421), (103, 276280), (206, 138140), (412, 69070), (515, 55256), (824, 34535), (1030, 27628), (2060, 13814), (4120, 6907)]