217810520

素因数分解:

$2^3\times 5^1\times {\mathrm{5445263}}^1$

素因数の和:5445274

約数の個数: 16

約数和(自身を含む): 490073760

約数和(自身を除く): 272263240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5445263, 10890526, 21781052, 27226315, 43562104, 54452630, 108905260, 217810520]

約数ペア:

[(1, 217810520), (2, 108905260), (4, 54452630), (5, 43562104), (8, 27226315), (10, 21781052), (20, 10890526), (40, 5445263)]