18253880

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3331}}^1$

素因数の和:3479

約数の個数: 32

約数和(自身を含む): 41383440

約数和(自身を除く): 23129560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 3331, 5480, 6662, 13324, 16655, 26648, 33310, 66620, 133240, 456347, 912694, 1825388, 2281735, 3650776, 4563470, 9126940, 18253880]

約数ペア:

[(1, 18253880), (2, 9126940), (4, 4563470), (5, 3650776), (8, 2281735), (10, 1825388), (20, 912694), (40, 456347), (137, 133240), (274, 66620), (548, 33310), (685, 26648), (1096, 16655), (1370, 13324), (2740, 6662), (3331, 5480)]