21312513

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{691}}^1$

素因数の和:869

約数の個数: 24

約数和(自身を含む): 32385600

約数和(自身を除く): 11073087

約数列:

[1, 3, 9, 23, 69, 149, 207, 447, 691, 1341, 2073, 3427, 6219, 10281, 15893, 30843, 47679, 102959, 143037, 308877, 926631, 2368057, 7104171, 21312513]

約数ペア:

[(1, 21312513), (3, 7104171), (9, 2368057), (23, 926631), (69, 308877), (149, 143037), (207, 102959), (447, 47679), (691, 30843), (1341, 15893), (2073, 10281), (3427, 6219)]