21931445

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{3851}}^1$

素因数の和:3940

約数の個数: 16

約数和(自身を含む): 28289088

約数和(自身を除く): 6357643

約数列:

[1, 5, 17, 67, 85, 335, 1139, 3851, 5695, 19255, 65467, 258017, 327335, 1290085, 4386289, 21931445]

約数ペア:

[(1, 21931445), (5, 4386289), (17, 1290085), (67, 327335), (85, 258017), (335, 65467), (1139, 19255), (3851, 5695)]