20705427

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{1579}}^1$

素因数の和:1663

約数の個数: 24

約数和(自身を含む): 31549440

約数和(自身を除く): 10844013

約数列:

[1, 3, 9, 31, 47, 93, 141, 279, 423, 1457, 1579, 4371, 4737, 13113, 14211, 48949, 74213, 146847, 222639, 440541, 667917, 2300603, 6901809, 20705427]

約数ペア:

[(1, 20705427), (3, 6901809), (9, 2300603), (31, 667917), (47, 440541), (93, 222639), (141, 146847), (279, 74213), (423, 48949), (1457, 14211), (1579, 13113), (4371, 4737)]