18141820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1009}}^1$

素因数の和:1078

約数の個数: 48

約数和(自身を含む): 40723200

約数和(自身を除く): 22581380

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 145, 155, 290, 310, 580, 620, 899, 1009, 1798, 2018, 3596, 4036, 4495, 5045, 8990, 10090, 17980, 20180, 29261, 31279, 58522, 62558, 117044, 125116, 146305, 156395, 292610, 312790, 585220, 625580, 907091, 1814182, 3628364, 4535455, 9070910, 18141820]

約数ペア:

[(1, 18141820), (2, 9070910), (4, 4535455), (5, 3628364), (10, 1814182), (20, 907091), (29, 625580), (31, 585220), (58, 312790), (62, 292610), (116, 156395), (124, 146305), (145, 125116), (155, 117044), (290, 62558), (310, 58522), (580, 31279), (620, 29261), (899, 20180), (1009, 17980), (1798, 10090), (2018, 8990), (3596, 5045), (4036, 4495)]