9878980

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2729}}^1$

素因数の和:2919

約数の個数: 24

約数和(自身を含む): 20868120

約数和(自身を除く): 10989140

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 2729, 3620, 5458, 10916, 13645, 27290, 54580, 493949, 987898, 1975796, 2469745, 4939490, 9878980]

約数ペア:

[(1, 9878980), (2, 4939490), (4, 2469745), (5, 1975796), (10, 987898), (20, 493949), (181, 54580), (362, 27290), (724, 13645), (905, 10916), (1810, 5458), (2729, 3620)]