19721565

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8269}}^1$

素因数の和:8333

約数の個数: 24

約数和(自身を含む): 34833240

約数和(自身を除く): 15111675

約数列:

[1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795, 2385, 8269, 24807, 41345, 74421, 124035, 372105, 438257, 1314771, 2191285, 3944313, 6573855, 19721565]

約数ペア:

[(1, 19721565), (3, 6573855), (5, 3944313), (9, 2191285), (15, 1314771), (45, 438257), (53, 372105), (159, 124035), (265, 74421), (477, 41345), (795, 24807), (2385, 8269)]