81684323

素因数分解:

$7^2\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{179}}^1$

素因数の和:399

約数の個数: 24

約数和(自身を含む): 97675200

約数和(自身を除く): 15990877

約数列:

[1, 7, 49, 67, 139, 179, 469, 973, 1253, 3283, 6811, 8771, 9313, 11993, 24881, 65191, 83951, 174167, 456337, 587657, 1219169, 1667027, 11669189, 81684323]

約数ペア:

[(1, 81684323), (7, 11669189), (49, 1667027), (67, 1219169), (139, 587657), (179, 456337), (469, 174167), (973, 83951), (1253, 65191), (3283, 24881), (6811, 11993), (8771, 9313)]