21956716

素因数分解:

$2^2\times {\mathrm{103}}^1\times {\mathrm{137}}^1\times {\mathrm{389}}^1$

素因数の和:633

約数の個数: 24

約数和(自身を含む): 39180960

約数和(自身を除く): 17224244

約数列:

[1, 2, 4, 103, 137, 206, 274, 389, 412, 548, 778, 1556, 14111, 28222, 40067, 53293, 56444, 80134, 106586, 160268, 213172, 5489179, 10978358, 21956716]

約数ペア:

[(1, 21956716), (2, 10978358), (4, 5489179), (103, 213172), (137, 160268), (206, 106586), (274, 80134), (389, 56444), (412, 53293), (548, 40067), (778, 28222), (1556, 14111)]