28217360

素因数分解:

$2^4\times 5^1\times {\mathrm{521}}^1\times {\mathrm{677}}^1$

素因数の和:1211

約数の個数: 40

約数和(自身を含む): 65828376

約数和(自身を除く): 37611016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 521, 677, 1042, 1354, 2084, 2605, 2708, 3385, 4168, 5210, 5416, 6770, 8336, 10420, 10832, 13540, 20840, 27080, 41680, 54160, 352717, 705434, 1410868, 1763585, 2821736, 3527170, 5643472, 7054340, 14108680, 28217360]

約数ペア:

[(1, 28217360), (2, 14108680), (4, 7054340), (5, 5643472), (8, 3527170), (10, 2821736), (16, 1763585), (20, 1410868), (40, 705434), (80, 352717), (521, 54160), (677, 41680), (1042, 27080), (1354, 20840), (2084, 13540), (2605, 10832), (2708, 10420), (3385, 8336), (4168, 6770), (5210, 5416)]