19642985

素因数分解:

$5^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:604

約数の個数: 16

約数和(自身を含む): 24110352

約数和(自身を除く): 4467367

約数列:

[1, 5, 97, 101, 401, 485, 505, 2005, 9797, 38897, 40501, 48985, 194485, 202505, 3928597, 19642985]

約数ペア:

[(1, 19642985), (5, 3928597), (97, 202505), (101, 194485), (401, 48985), (485, 40501), (505, 38897), (2005, 9797)]