138663620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{1609}}^1$

素因数の和:1788

約数の個数: 48

約数和(自身を含む): 302937600

約数和(自身を除く): 164273980

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 139, 155, 278, 310, 556, 620, 695, 1390, 1609, 2780, 3218, 4309, 6436, 8045, 8618, 16090, 17236, 21545, 32180, 43090, 49879, 86180, 99758, 199516, 223651, 249395, 447302, 498790, 894604, 997580, 1118255, 2236510, 4473020, 6933181, 13866362, 27732724, 34665905, 69331810, 138663620]

約数ペア:

[(1, 138663620), (2, 69331810), (4, 34665905), (5, 27732724), (10, 13866362), (20, 6933181), (31, 4473020), (62, 2236510), (124, 1118255), (139, 997580), (155, 894604), (278, 498790), (310, 447302), (556, 249395), (620, 223651), (695, 199516), (1390, 99758), (1609, 86180), (2780, 49879), (3218, 43090), (4309, 32180), (6436, 21545), (8045, 17236), (8618, 16090)]