20875881

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^2$

素因数の和:130

約数の個数: 48

約数和(自身を含む): 34038144

約数和(自身を除く): 13162263

約数列:

[1, 3, 13, 17, 23, 37, 39, 51, 69, 111, 221, 299, 391, 481, 629, 663, 851, 897, 1173, 1369, 1443, 1887, 2553, 4107, 5083, 8177, 11063, 14467, 15249, 17797, 23273, 24531, 31487, 33189, 43401, 53391, 69819, 94461, 188071, 302549, 409331, 535279, 564213, 907647, 1227993, 1605837, 6958627, 20875881]

約数ペア:

[(1, 20875881), (3, 6958627), (13, 1605837), (17, 1227993), (23, 907647), (37, 564213), (39, 535279), (51, 409331), (69, 302549), (111, 188071), (221, 94461), (299, 69819), (391, 53391), (481, 43401), (629, 33189), (663, 31487), (851, 24531), (897, 23273), (1173, 17797), (1369, 15249), (1443, 14467), (1887, 11063), (2553, 8177), (4107, 5083)]