21386775

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{9833}}^1$

素因数の和:9875

約数の個数: 24

約数和(自身を含む): 36582480

約数和(自身を除く): 15195705

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 435, 725, 2175, 9833, 29499, 49165, 147495, 245825, 285157, 737475, 855471, 1425785, 4277355, 7128925, 21386775]

約数ペア:

[(1, 21386775), (3, 7128925), (5, 4277355), (15, 1425785), (25, 855471), (29, 737475), (75, 285157), (87, 245825), (145, 147495), (435, 49165), (725, 29499), (2175, 9833)]