20472525

素因数分解:

$3^2\times 5^2\times {\mathrm{90989}}^1$

素因数の和:91005

約数の個数: 18

約数和(自身を含む): 36668970

約数和(自身を除く): 16196445

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 90989, 272967, 454945, 818901, 1364835, 2274725, 4094505, 6824175, 20472525]

約数ペア:

[(1, 20472525), (3, 6824175), (5, 4094505), (9, 2274725), (15, 1364835), (25, 818901), (45, 454945), (75, 272967), (225, 90989)]