8013820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{21089}}^1$

素因数の和:21117

約数の個数: 24

約数和(自身を含む): 17715600

約数和(自身を除く): 9701780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 21089, 42178, 84356, 105445, 210890, 400691, 421780, 801382, 1602764, 2003455, 4006910, 8013820]

約数ペア:

[(1, 8013820), (2, 4006910), (4, 2003455), (5, 1602764), (10, 801382), (19, 421780), (20, 400691), (38, 210890), (76, 105445), (95, 84356), (190, 42178), (380, 21089)]