20989315

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{467}}^1$

素因数の和:662

約数の個数: 16

約数和(自身を含む): 25777440

約数和(自身を除く): 4788125

約数列:

[1, 5, 89, 101, 445, 467, 505, 2335, 8989, 41563, 44945, 47167, 207815, 235835, 4197863, 20989315]

約数ペア:

[(1, 20989315), (5, 4197863), (89, 235835), (101, 207815), (445, 47167), (467, 44945), (505, 41563), (2335, 8989)]