20169820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5393}}^1$

素因数の和:5430

約数の個数: 48

約数和(自身を含む): 48934368

約数和(自身を除く): 28764548

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5393, 10786, 21572, 26965, 53930, 59323, 91681, 107860, 118646, 183362, 237292, 296615, 366724, 458405, 593230, 916810, 1008491, 1186460, 1833620, 2016982, 4033964, 5042455, 10084910, 20169820]

約数ペア:

[(1, 20169820), (2, 10084910), (4, 5042455), (5, 4033964), (10, 2016982), (11, 1833620), (17, 1186460), (20, 1008491), (22, 916810), (34, 593230), (44, 458405), (55, 366724), (68, 296615), (85, 237292), (110, 183362), (170, 118646), (187, 107860), (220, 91681), (340, 59323), (374, 53930), (748, 26965), (935, 21572), (1870, 10786), (3740, 5393)]