21398247

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4943}}^1$

素因数の和:4999

約数の個数: 24

約数和(自身を含む): 34192704

約数和(自身を除く): 12794457

約数列:

[1, 3, 9, 13, 37, 39, 111, 117, 333, 481, 1443, 4329, 4943, 14829, 44487, 64259, 182891, 192777, 548673, 578331, 1646019, 2377583, 7132749, 21398247]

約数ペア:

[(1, 21398247), (3, 7132749), (9, 2377583), (13, 1646019), (37, 578331), (39, 548673), (111, 192777), (117, 182891), (333, 64259), (481, 44487), (1443, 14829), (4329, 4943)]