20885360

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3677}}^1$

素因数の和:3761

約数の個数: 40

約数和(自身を含む): 49255776

約数和(自身を除く): 28370416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3677, 5680, 7354, 14708, 18385, 29416, 36770, 58832, 73540, 147080, 261067, 294160, 522134, 1044268, 1305335, 2088536, 2610670, 4177072, 5221340, 10442680, 20885360]

約数ペア:

[(1, 20885360), (2, 10442680), (4, 5221340), (5, 4177072), (8, 2610670), (10, 2088536), (16, 1305335), (20, 1044268), (40, 522134), (71, 294160), (80, 261067), (142, 147080), (284, 73540), (355, 58832), (568, 36770), (710, 29416), (1136, 18385), (1420, 14708), (2840, 7354), (3677, 5680)]