21105855

素因数分解:

$3^2\times 5^1\times {\mathrm{463}}^1\times {\mathrm{1013}}^1$

素因数の和:1487

約数の個数: 24

約数和(自身を含む): 36698688

約数和(自身を除く): 15592833

約数列:

[1, 3, 5, 9, 15, 45, 463, 1013, 1389, 2315, 3039, 4167, 5065, 6945, 9117, 15195, 20835, 45585, 469019, 1407057, 2345095, 4221171, 7035285, 21105855]

約数ペア:

[(1, 21105855), (3, 7035285), (5, 4221171), (9, 2345095), (15, 1407057), (45, 469019), (463, 45585), (1013, 20835), (1389, 15195), (2315, 9117), (3039, 6945), (4167, 5065)]