21248940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{354149}}^1$

素因数の和:354161

約数の個数: 24

約数和(自身を含む): 59497200

約数和(自身を除く): 38248260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 354149, 708298, 1062447, 1416596, 1770745, 2124894, 3541490, 4249788, 5312235, 7082980, 10624470, 21248940]

約数ペア:

[(1, 21248940), (2, 10624470), (3, 7082980), (4, 5312235), (5, 4249788), (6, 3541490), (10, 2124894), (12, 1770745), (15, 1416596), (20, 1062447), (30, 708298), (60, 354149)]