720172220

素因数分解:

$2^2\times 5^1\times {\mathrm{1297}}^1\times {\mathrm{27763}}^1$

素因数の和:29069

約数の個数: 24

約数和(自身を含む): 1513582224

約数和(自身を除く): 793410004

約数列:

[1, 2, 4, 5, 10, 20, 1297, 2594, 5188, 6485, 12970, 25940, 27763, 55526, 111052, 138815, 277630, 555260, 36008611, 72017222, 144034444, 180043055, 360086110, 720172220]

約数ペア:

[(1, 720172220), (2, 360086110), (4, 180043055), (5, 144034444), (10, 72017222), (20, 36008611), (1297, 555260), (2594, 277630), (5188, 138815), (6485, 111052), (12970, 55526), (25940, 27763)]