21953075

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{409}}^1$

素因数の和:551

約数の個数: 24

約数和(自身を含む): 28978800

約数和(自身を除く): 7025725

約数列:

[1, 5, 19, 25, 95, 113, 409, 475, 565, 2045, 2147, 2825, 7771, 10225, 10735, 38855, 46217, 53675, 194275, 231085, 878123, 1155425, 4390615, 21953075]

約数ペア:

[(1, 21953075), (5, 4390615), (19, 1155425), (25, 878123), (95, 231085), (113, 194275), (409, 53675), (475, 46217), (565, 38855), (2045, 10735), (2147, 10225), (2825, 7771)]