21295521

素因数分解:

$3^3\times {\mathrm{13}}^3\times {\mathrm{359}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 34272000

約数和(自身を除く): 12976479

約数列:

[1, 3, 9, 13, 27, 39, 117, 169, 351, 359, 507, 1077, 1521, 2197, 3231, 4563, 4667, 6591, 9693, 14001, 19773, 42003, 59319, 60671, 126009, 182013, 546039, 788723, 1638117, 2366169, 7098507, 21295521]

約数ペア:

[(1, 21295521), (3, 7098507), (9, 2366169), (13, 1638117), (27, 788723), (39, 546039), (117, 182013), (169, 126009), (351, 60671), (359, 59319), (507, 42003), (1077, 19773), (1521, 14001), (2197, 9693), (3231, 6591), (4563, 4667)]