20910905

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1\times {\mathrm{317}}^1$

素因数の和:568

約数の個数: 16

約数和(自身を含む): 25643520

約数和(自身を除く): 4732615

約数列:

[1, 5, 79, 167, 317, 395, 835, 1585, 13193, 25043, 52939, 65965, 125215, 264695, 4182181, 20910905]

約数ペア:

[(1, 20910905), (5, 4182181), (79, 264695), (167, 125215), (317, 65965), (395, 52939), (835, 25043), (1585, 13193)]