20777740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2657}}^1$

素因数の和:2706

約数の個数: 48

約数和(自身を含む): 48226752

約数和(自身を除く): 27449012

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 2657, 3910, 5314, 7820, 10628, 13285, 26570, 45169, 53140, 61111, 90338, 122222, 180676, 225845, 244444, 305555, 451690, 611110, 903380, 1038887, 1222220, 2077774, 4155548, 5194435, 10388870, 20777740]

約数ペア:

[(1, 20777740), (2, 10388870), (4, 5194435), (5, 4155548), (10, 2077774), (17, 1222220), (20, 1038887), (23, 903380), (34, 611110), (46, 451690), (68, 305555), (85, 244444), (92, 225845), (115, 180676), (170, 122222), (230, 90338), (340, 61111), (391, 53140), (460, 45169), (782, 26570), (1564, 13285), (1955, 10628), (2657, 7820), (3910, 5314)]