21248025

素因数分解:

$3^1\times 5^2\times {\mathrm{491}}^1\times {\mathrm{577}}^1$

素因数の和:1081

約数の個数: 24

約数和(自身を含む): 35262624

約数和(自身を除く): 14014599

約数列:

[1, 3, 5, 15, 25, 75, 491, 577, 1473, 1731, 2455, 2885, 7365, 8655, 12275, 14425, 36825, 43275, 283307, 849921, 1416535, 4249605, 7082675, 21248025]

約数ペア:

[(1, 21248025), (3, 7082675), (5, 4249605), (15, 1416535), (25, 849921), (75, 283307), (491, 43275), (577, 36825), (1473, 14425), (1731, 12275), (2455, 8655), (2885, 7365)]