20979340

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4621}}^1$

素因数の和:4857

約数の個数: 24

約数和(自身を含む): 44260272

約数和(自身を除く): 23280932

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4540, 4621, 9242, 18484, 23105, 46210, 92420, 1048967, 2097934, 4195868, 5244835, 10489670, 20979340]

約数ペア:

[(1, 20979340), (2, 10489670), (4, 5244835), (5, 4195868), (10, 2097934), (20, 1048967), (227, 92420), (454, 46210), (908, 23105), (1135, 18484), (2270, 9242), (4540, 4621)]