21105225

素因数分解:

$3^3\times 5^2\times {\mathrm{31267}}^1$

素因数の和:31286

約数の個数: 24

約数和(自身を含む): 38772320

約数和(自身を除く): 17667095

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 31267, 93801, 156335, 281403, 469005, 781675, 844209, 1407015, 2345025, 4221045, 7035075, 21105225]

約数ペア:

[(1, 21105225), (3, 7035075), (5, 4221045), (9, 2345025), (15, 1407015), (25, 844209), (27, 781675), (45, 469005), (75, 281403), (135, 156335), (225, 93801), (675, 31267)]