20809917

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{439}}^1$

素因数の和:697

約数の個数: 24

約数和(自身を含む): 31574400

約数和(自身を除く): 10764483

約数列:

[1, 3, 9, 23, 69, 207, 229, 439, 687, 1317, 2061, 3951, 5267, 10097, 15801, 30291, 47403, 90873, 100531, 301593, 904779, 2312213, 6936639, 20809917]

約数ペア:

[(1, 20809917), (3, 6936639), (9, 2312213), (23, 904779), (69, 301593), (207, 100531), (229, 90873), (439, 47403), (687, 30291), (1317, 15801), (2061, 10097), (3951, 5267)]