203219920

素因数分解:

$2^4\times 5^1\times {\mathrm{2540249}}^1$

素因数の和:2540262

約数の個数: 20

約数和(自身を含む): 472486500

約数和(自身を除く): 269266580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2540249, 5080498, 10160996, 12701245, 20321992, 25402490, 40643984, 50804980, 101609960, 203219920]

約数ペア:

[(1, 203219920), (2, 101609960), (4, 50804980), (5, 40643984), (8, 25402490), (10, 20321992), (16, 12701245), (20, 10160996), (40, 5080498), (80, 2540249)]