18956679

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{2999}}^1$

素因数の和:3059

約数の個数: 24

約数和(自身を含む): 30096000

約数和(自身を除く): 11139321

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 2999, 6321, 8997, 20993, 62979, 128957, 146951, 386871, 440853, 902699, 2708097, 6318893, 18956679]

約数ペア:

[(1, 18956679), (3, 6318893), (7, 2708097), (21, 902699), (43, 440853), (49, 386871), (129, 146951), (147, 128957), (301, 62979), (903, 20993), (2107, 8997), (2999, 6321)]