21087420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{351457}}^1$

素因数の和:351469

約数の個数: 24

約数和(自身を含む): 59044944

約数和(自身を除く): 37957524

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 351457, 702914, 1054371, 1405828, 1757285, 2108742, 3514570, 4217484, 5271855, 7029140, 10543710, 21087420]

約数ペア:

[(1, 21087420), (2, 10543710), (3, 7029140), (4, 5271855), (5, 4217484), (6, 3514570), (10, 2108742), (12, 1757285), (15, 1405828), (20, 1054371), (30, 702914), (60, 351457)]