20287970

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{911}}^1$

素因数の和:1066

約数の個数: 32

約数和(自身を含む): 39004416

約数和(自身を除く): 18716446

約数列:

[1, 2, 5, 10, 17, 34, 85, 131, 170, 262, 655, 911, 1310, 1822, 2227, 4454, 4555, 9110, 11135, 15487, 22270, 30974, 77435, 119341, 154870, 238682, 596705, 1193410, 2028797, 4057594, 10143985, 20287970]

約数ペア:

[(1, 20287970), (2, 10143985), (5, 4057594), (10, 2028797), (17, 1193410), (34, 596705), (85, 238682), (131, 154870), (170, 119341), (262, 77435), (655, 30974), (911, 22270), (1310, 15487), (1822, 11135), (2227, 9110), (4454, 4555)]