21379465

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{719}}^1$

素因数の和:1056

約数の個数: 16

約数和(自身を含む): 27129600

約数和(自身を除く): 5750135

約数列:

[1, 5, 19, 95, 313, 719, 1565, 3595, 5947, 13661, 29735, 68305, 225047, 1125235, 4275893, 21379465]

約数ペア:

[(1, 21379465), (5, 4275893), (19, 1125235), (95, 225047), (313, 68305), (719, 29735), (1565, 13661), (3595, 5947)]