21690776

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{159491}}^1$

素因数の和:159514

約数の個数: 16

約数和(自身を含む): 43062840

約数和(自身を除く): 21372064

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 159491, 318982, 637964, 1275928, 2711347, 5422694, 10845388, 21690776]

約数ペア:

[(1, 21690776), (2, 10845388), (4, 5422694), (8, 2711347), (17, 1275928), (34, 637964), (68, 318982), (136, 159491)]