21172055

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{3001}}^1$

素因数の和:3106

約数の個数: 16

約数和(自身を含む): 27234144

約数和(自身を除く): 6062089

約数列:

[1, 5, 17, 83, 85, 415, 1411, 3001, 7055, 15005, 51017, 249083, 255085, 1245415, 4234411, 21172055]

約数ペア:

[(1, 21172055), (5, 4234411), (17, 1245415), (83, 255085), (85, 249083), (415, 51017), (1411, 15005), (3001, 7055)]