18457780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1583}}^1$

素因数の和:1656

約数の個数: 48

約数和(自身を含む): 43110144

約数和(自身を除く): 24652364

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 1583, 2332, 2915, 3166, 5830, 6332, 7915, 11660, 15830, 17413, 31660, 34826, 69652, 83899, 87065, 167798, 174130, 335596, 348260, 419495, 838990, 922889, 1677980, 1845778, 3691556, 4614445, 9228890, 18457780]

約数ペア:

[(1, 18457780), (2, 9228890), (4, 4614445), (5, 3691556), (10, 1845778), (11, 1677980), (20, 922889), (22, 838990), (44, 419495), (53, 348260), (55, 335596), (106, 174130), (110, 167798), (212, 87065), (220, 83899), (265, 69652), (530, 34826), (583, 31660), (1060, 17413), (1166, 15830), (1583, 11660), (2332, 7915), (2915, 6332), (3166, 5830)]