21070155

素因数分解:

$3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{6299}}^1$

素因数の和:6530

約数の個数: 16

約数和(自身を含む): 33868800

約数和(自身を除く): 12798645

約数列:

[1, 3, 5, 15, 223, 669, 1115, 3345, 6299, 18897, 31495, 94485, 1404677, 4214031, 7023385, 21070155]

約数ペア:

[(1, 21070155), (3, 7023385), (5, 4214031), (15, 1404677), (223, 94485), (669, 31495), (1115, 18897), (3345, 6299)]