21885790

素因数分解:

$2^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{6271}}^1$

素因数の和:6627

約数の個数: 16

約数和(自身を含む): 39513600

約数和(自身を除く): 17627810

約数列:

[1, 2, 5, 10, 349, 698, 1745, 3490, 6271, 12542, 31355, 62710, 2188579, 4377158, 10942895, 21885790]

約数ペア:

[(1, 21885790), (2, 10942895), (5, 4377158), (10, 2188579), (349, 62710), (698, 31355), (1745, 12542), (3490, 6271)]