18621040

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1699}}^1$

素因数の和:1849

約数の個数: 40

約数和(自身を含む): 43635600

約数和(自身を除く): 25014560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 1699, 2192, 2740, 3398, 5480, 6796, 8495, 10960, 13592, 16990, 27184, 33980, 67960, 135920, 232763, 465526, 931052, 1163815, 1862104, 2327630, 3724208, 4655260, 9310520, 18621040]

約数ペア:

[(1, 18621040), (2, 9310520), (4, 4655260), (5, 3724208), (8, 2327630), (10, 1862104), (16, 1163815), (20, 931052), (40, 465526), (80, 232763), (137, 135920), (274, 67960), (548, 33980), (685, 27184), (1096, 16990), (1370, 13592), (1699, 10960), (2192, 8495), (2740, 6796), (3398, 5480)]