21841625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{13441}}^1$

素因数の和:13469

約数の個数: 16

約数和(自身を含む): 29357328

約数和(自身を除く): 7515703

約数列:

[1, 5, 13, 25, 65, 125, 325, 1625, 13441, 67205, 174733, 336025, 873665, 1680125, 4368325, 21841625]

約数ペア:

[(1, 21841625), (5, 4368325), (13, 1680125), (25, 873665), (65, 336025), (125, 174733), (325, 67205), (1625, 13441)]