21281425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4073}}^1$

素因数の和:4113

約数の個数: 24

約数和(自身を含む): 30310560

約数和(自身を除く): 9029135

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 4073, 5225, 20365, 44803, 77387, 101825, 224015, 386935, 851257, 1120075, 1934675, 4256285, 21281425]

約数ペア:

[(1, 21281425), (5, 4256285), (11, 1934675), (19, 1120075), (25, 851257), (55, 386935), (95, 224015), (209, 101825), (275, 77387), (475, 44803), (1045, 20365), (4073, 5225)]