128995209

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{55339}}^1$

素因数の和:55389

約数の個数: 24

約数和(自身を含む): 218703680

約数和(自身を除く): 89708471

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 55339, 166017, 387373, 498051, 1162119, 2047543, 3486357, 6142629, 14332801, 18427887, 42998403, 128995209]

約数ペア:

[(1, 128995209), (3, 42998403), (7, 18427887), (9, 14332801), (21, 6142629), (37, 3486357), (63, 2047543), (111, 1162119), (259, 498051), (333, 387373), (777, 166017), (2331, 55339)]