25420840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{8951}}^1$

素因数の和:9033

約数の個数: 32

約数和(自身を含む): 58008960

約数和(自身を除く): 32588120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 8951, 17902, 35804, 44755, 71608, 89510, 179020, 358040, 635521, 1271042, 2542084, 3177605, 5084168, 6355210, 12710420, 25420840]

約数ペア:

[(1, 25420840), (2, 12710420), (4, 6355210), (5, 5084168), (8, 3177605), (10, 2542084), (20, 1271042), (40, 635521), (71, 358040), (142, 179020), (284, 89510), (355, 71608), (568, 44755), (710, 35804), (1420, 17902), (2840, 8951)]