21245128

素因数分解:

$2^3\times {\mathrm{47}}^1\times {\mathrm{56503}}^1$

素因数の和:56556

約数の個数: 16

約数和(自身を含む): 40682880

約数和(自身を除く): 19437752

約数列:

[1, 2, 4, 8, 47, 94, 188, 376, 56503, 113006, 226012, 452024, 2655641, 5311282, 10622564, 21245128]

約数ペア:

[(1, 21245128), (2, 10622564), (4, 5311282), (8, 2655641), (47, 452024), (94, 226012), (188, 113006), (376, 56503)]