20305251

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{233}}^1\times {\mathrm{421}}^1$

素因数の和:683

約数の個数: 24

約数和(自身を含む): 30809376

約数和(自身を除く): 10504125

約数列:

[1, 3, 9, 23, 69, 207, 233, 421, 699, 1263, 2097, 3789, 5359, 9683, 16077, 29049, 48231, 87147, 98093, 294279, 882837, 2256139, 6768417, 20305251]

約数ペア:

[(1, 20305251), (3, 6768417), (9, 2256139), (23, 882837), (69, 294279), (207, 98093), (233, 87147), (421, 48231), (699, 29049), (1263, 16077), (2097, 9683), (3789, 5359)]