21907670

素因数分解:

$2^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{15991}}^1$

素因数の和:16135

約数の個数: 16

約数和(自身を含む): 39724128

約数和(自身を除く): 17816458

約数列:

[1, 2, 5, 10, 137, 274, 685, 1370, 15991, 31982, 79955, 159910, 2190767, 4381534, 10953835, 21907670]

約数ペア:

[(1, 21907670), (2, 10953835), (5, 4381534), (10, 2190767), (137, 159910), (274, 79955), (685, 31982), (1370, 15991)]