20609685

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10651}}^1$

素因数の和:10705

約数の個数: 24

約数和(自身を含む): 36557664

約数和(自身を除く): 15947979

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 10651, 31953, 53255, 95859, 159765, 457993, 479295, 1373979, 2289965, 4121937, 6869895, 20609685]

約数ペア:

[(1, 20609685), (3, 6869895), (5, 4121937), (9, 2289965), (15, 1373979), (43, 479295), (45, 457993), (129, 159765), (215, 95859), (387, 53255), (645, 31953), (1935, 10651)]