21778730

素因数分解:

$2^1\times 5^1\times {\mathrm{151}}^1\times {\mathrm{14423}}^1$

素因数の和:14581

約数の個数: 16

約数和(自身を含む): 39464064

約数和(自身を除く): 17685334

約数列:

[1, 2, 5, 10, 151, 302, 755, 1510, 14423, 28846, 72115, 144230, 2177873, 4355746, 10889365, 21778730]

約数ペア:

[(1, 21778730), (2, 10889365), (5, 4355746), (10, 2177873), (151, 144230), (302, 72115), (755, 28846), (1510, 14423)]