55717557

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{19949}}^1$

素因数の和:19985

約数の個数: 24

約数和(自身を含む): 90972000

約数和(自身を除く): 35254443

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 19949, 59847, 139643, 379031, 418929, 977501, 1137093, 2653217, 2932503, 7959651, 18572519, 55717557]

約数ペア:

[(1, 55717557), (3, 18572519), (7, 7959651), (19, 2932503), (21, 2653217), (49, 1137093), (57, 977501), (133, 418929), (147, 379031), (399, 139643), (931, 59847), (2793, 19949)]