81871881

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:135

約数の個数: 96

約数和(自身を含む): 151787520

約数和(自身を除く): 69915639

約数列:

[1, 3, 7, 13, 17, 21, 23, 39, 51, 59, 69, 91, 119, 161, 169, 177, 221, 273, 299, 357, 391, 413, 483, 507, 663, 767, 897, 1003, 1173, 1183, 1239, 1357, 1547, 2093, 2301, 2737, 2873, 3009, 3549, 3887, 4071, 4641, 5083, 5369, 6279, 7021, 8211, 8619, 9499, 9971, 11661, 13039, 15249, 16107, 17641, 20111, 21063, 23069, 27209, 28497, 29913, 35581, 39117, 52923, 60333, 66079, 69207, 69797, 81627, 91273, 106743, 123487, 161483, 169507, 198237, 209391, 229333, 273819, 299897, 370461, 462553, 484449, 508521, 687999, 899691, 1186549, 1387659, 1605331, 2099279, 3559647, 3898661, 4815993, 6297837, 11695983, 27290627, 81871881]

約数ペア:

[(1, 81871881), (3, 27290627), (7, 11695983), (13, 6297837), (17, 4815993), (21, 3898661), (23, 3559647), (39, 2099279), (51, 1605331), (59, 1387659), (69, 1186549), (91, 899691), (119, 687999), (161, 508521), (169, 484449), (177, 462553), (221, 370461), (273, 299897), (299, 273819), (357, 229333), (391, 209391), (413, 198237), (483, 169507), (507, 161483), (663, 123487), (767, 106743), (897, 91273), (1003, 81627), (1173, 69797), (1183, 69207), (1239, 66079), (1357, 60333), (1547, 52923), (2093, 39117), (2301, 35581), (2737, 29913), (2873, 28497), (3009, 27209), (3549, 23069), (3887, 21063), (4071, 20111), (4641, 17641), (5083, 16107), (5369, 15249), (6279, 13039), (7021, 11661), (8211, 9971), (8619, 9499)]