21559185

素因数分解:

$3^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{727}}^1$

素因数の和:1397

約数の個数: 24

約数和(自身を含む): 37477440

約数和(自身を除く): 15918255

約数列:

[1, 3, 5, 9, 15, 45, 659, 727, 1977, 2181, 3295, 3635, 5931, 6543, 9885, 10905, 29655, 32715, 479093, 1437279, 2395465, 4311837, 7186395, 21559185]

約数ペア:

[(1, 21559185), (3, 7186395), (5, 4311837), (9, 2395465), (15, 1437279), (45, 479093), (659, 32715), (727, 29655), (1977, 10905), (2181, 9885), (3295, 6543), (3635, 5931)]