21047090

素因数分解:

$2^1\times 5^1\times {\mathrm{881}}^1\times {\mathrm{2389}}^1$

素因数の和:3277

約数の個数: 16

約数和(自身を含む): 37943640

約数和(自身を除く): 16896550

約数列:

[1, 2, 5, 10, 881, 1762, 2389, 4405, 4778, 8810, 11945, 23890, 2104709, 4209418, 10523545, 21047090]

約数ペア:

[(1, 21047090), (2, 10523545), (5, 4209418), (10, 2104709), (881, 23890), (1762, 11945), (2389, 8810), (4405, 4778)]