21743145

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^2$

素因数の和:250

約数の個数: 36

約数和(自身を含む): 38741196

約数和(自身を除く): 16998051

約数列:

[1, 3, 5, 9, 15, 45, 61, 89, 183, 267, 305, 445, 549, 801, 915, 1335, 2745, 4005, 5429, 7921, 16287, 23763, 27145, 39605, 48861, 71289, 81435, 118815, 244305, 356445, 483181, 1449543, 2415905, 4348629, 7247715, 21743145]

約数ペア:

[(1, 21743145), (3, 7247715), (5, 4348629), (9, 2415905), (15, 1449543), (45, 483181), (61, 356445), (89, 244305), (183, 118815), (267, 81435), (305, 71289), (445, 48861), (549, 39605), (801, 27145), (915, 23763), (1335, 16287), (2745, 7921), (4005, 5429)]