21221499

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{2203}}^1$

素因数の和:2251

約数の個数: 24

約数和(自身を含む): 32266560

約数和(自身を除く): 11045061

約数列:

[1, 3, 13, 19, 39, 57, 169, 247, 507, 741, 2203, 3211, 6609, 9633, 28639, 41857, 85917, 125571, 372307, 544141, 1116921, 1632423, 7073833, 21221499]

約数ペア:

[(1, 21221499), (3, 7073833), (13, 1632423), (19, 1116921), (39, 544141), (57, 372307), (169, 125571), (247, 85917), (507, 41857), (741, 28639), (2203, 9633), (3211, 6609)]