21426775

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{571}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 28371200

約数和(自身を除く): 6944425

約数列:

[1, 5, 19, 25, 79, 95, 395, 475, 571, 1501, 1975, 2855, 7505, 10849, 14275, 37525, 45109, 54245, 225545, 271225, 857071, 1127725, 4285355, 21426775]

約数ペア:

[(1, 21426775), (5, 4285355), (19, 1127725), (25, 857071), (79, 271225), (95, 225545), (395, 54245), (475, 45109), (571, 37525), (1501, 14275), (1975, 10849), (2855, 7505)]