28139480

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3571}}^1$

素因数の和:3779

約数の個数: 32

約数和(自身を含む): 63653040

約数和(自身を除く): 35513560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3571, 3940, 7142, 7880, 14284, 17855, 28568, 35710, 71420, 142840, 703487, 1406974, 2813948, 3517435, 5627896, 7034870, 14069740, 28139480]

約数ペア:

[(1, 28139480), (2, 14069740), (4, 7034870), (5, 5627896), (8, 3517435), (10, 2813948), (20, 1406974), (40, 703487), (197, 142840), (394, 71420), (788, 35710), (985, 28568), (1576, 17855), (1970, 14284), (3571, 7880), (3940, 7142)]