21072375

素因数分解:

$3^2\times 5^3\times {\mathrm{18731}}^1$

素因数の和:18752

約数の個数: 24

約数和(自身を含む): 37988496

約数和(自身を除く): 16916121

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 1125, 18731, 56193, 93655, 168579, 280965, 468275, 842895, 1404825, 2341375, 4214475, 7024125, 21072375]

約数ペア:

[(1, 21072375), (3, 7024125), (5, 4214475), (9, 2341375), (15, 1404825), (25, 842895), (45, 468275), (75, 280965), (125, 168579), (225, 93655), (375, 56193), (1125, 18731)]