21811380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{363523}}^1$

素因数の和:363535

約数の個数: 24

約数和(自身を含む): 61072032

約数和(自身を除く): 39260652

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 363523, 727046, 1090569, 1454092, 1817615, 2181138, 3635230, 4362276, 5452845, 7270460, 10905690, 21811380]

約数ペア:

[(1, 21811380), (2, 10905690), (3, 7270460), (4, 5452845), (5, 4362276), (6, 3635230), (10, 2181138), (12, 1817615), (15, 1454092), (20, 1090569), (30, 727046), (60, 363523)]