21090975

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{9697}}^1$

素因数の和:9739

約数の個数: 24

約数和(自身を含む): 36076560

約数和(自身を除く): 14985585

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 435, 725, 2175, 9697, 29091, 48485, 145455, 242425, 281213, 727275, 843639, 1406065, 4218195, 7030325, 21090975]

約数ペア:

[(1, 21090975), (3, 7030325), (5, 4218195), (15, 1406065), (25, 843639), (29, 727275), (75, 281213), (87, 242425), (145, 145455), (435, 48485), (725, 29091), (2175, 9697)]