21689145

素因数分解:

$3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{5807}}^1$

素因数の和:5901

約数の個数: 24

約数和(自身を含む): 38054016

約数和(自身を除く): 16364871

約数列:

[1, 3, 5, 9, 15, 45, 83, 249, 415, 747, 1245, 3735, 5807, 17421, 29035, 52263, 87105, 261315, 481981, 1445943, 2409905, 4337829, 7229715, 21689145]

約数ペア:

[(1, 21689145), (3, 7229715), (5, 4337829), (9, 2409905), (15, 1445943), (45, 481981), (83, 261315), (249, 87105), (415, 52263), (747, 29035), (1245, 17421), (3735, 5807)]