20856620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61343}}^1$

素因数の和:61369

約数の個数: 24

約数和(自身を含む): 46376064

約数和(自身を除く): 25519444

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61343, 122686, 245372, 306715, 613430, 1042831, 1226860, 2085662, 4171324, 5214155, 10428310, 20856620]

約数ペア:

[(1, 20856620), (2, 10428310), (4, 5214155), (5, 4171324), (10, 2085662), (17, 1226860), (20, 1042831), (34, 613430), (68, 306715), (85, 245372), (170, 122686), (340, 61343)]