18171140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1487}}^1$

素因数の和:1556

約数の個数: 48

約数和(自身を含む): 41997312

約数和(自身を除く): 23826172

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 1487, 2444, 2974, 3055, 5948, 6110, 7435, 12220, 14870, 19331, 29740, 38662, 69889, 77324, 96655, 139778, 193310, 279556, 349445, 386620, 698890, 908557, 1397780, 1817114, 3634228, 4542785, 9085570, 18171140]

約数ペア:

[(1, 18171140), (2, 9085570), (4, 4542785), (5, 3634228), (10, 1817114), (13, 1397780), (20, 908557), (26, 698890), (47, 386620), (52, 349445), (65, 279556), (94, 193310), (130, 139778), (188, 96655), (235, 77324), (260, 69889), (470, 38662), (611, 29740), (940, 19331), (1222, 14870), (1487, 12220), (2444, 7435), (2974, 6110), (3055, 5948)]