21485225

素因数分解:

$5^2\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:305

約数の個数: 24

約数和(自身を含む): 27522048

約数和(自身を除く): 6036823

約数列:

[1, 5, 25, 67, 101, 127, 335, 505, 635, 1675, 2525, 3175, 6767, 8509, 12827, 33835, 42545, 64135, 169175, 212725, 320675, 859409, 4297045, 21485225]

約数ペア:

[(1, 21485225), (5, 4297045), (25, 859409), (67, 320675), (101, 212725), (127, 169175), (335, 64135), (505, 42545), (635, 33835), (1675, 12827), (2525, 8509), (3175, 6767)]