21639561

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{1423}}^1$

素因数の和:1600

約数の個数: 16

約数和(自身を含む): 29869824

約数和(自身を除く): 8230263

約数列:

[1, 3, 37, 111, 137, 411, 1423, 4269, 5069, 15207, 52651, 157953, 194951, 584853, 7213187, 21639561]

約数ペア:

[(1, 21639561), (3, 7213187), (37, 584853), (111, 194951), (137, 157953), (411, 52651), (1423, 15207), (4269, 5069)]