21175988

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{199}}^1\times {\mathrm{719}}^1$

素因数の和:959

約数の個数: 24

約数和(自身を含む): 38304000

約数和(自身を除く): 17128012

約数列:

[1, 2, 4, 37, 74, 148, 199, 398, 719, 796, 1438, 2876, 7363, 14726, 26603, 29452, 53206, 106412, 143081, 286162, 572324, 5293997, 10587994, 21175988]

約数ペア:

[(1, 21175988), (2, 10587994), (4, 5293997), (37, 572324), (74, 286162), (148, 143081), (199, 106412), (398, 53206), (719, 29452), (796, 26603), (1438, 14726), (2876, 7363)]