291221123560

素因数分解:

$2^3\times 5^1\times {\mathrm{7280528089}}^1$

素因数の和:7280528100

約数の個数: 16

約数和(自身を含む): 655247528100

約数和(自身を除く): 364026404540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7280528089, 14561056178, 29122112356, 36402640445, 58244224712, 72805280890, 145610561780, 291221123560]

約数ペア:

[(1, 291221123560), (2, 145610561780), (4, 72805280890), (5, 58244224712), (8, 36402640445), (10, 29122112356), (20, 14561056178), (40, 7280528089)]