158561800

素因数分解:

$2^3\times 5^2\times {\mathrm{397}}^1\times {\mathrm{1997}}^1$

素因数の和:2410

約数の個数: 48

約数和(自身を含む): 369769860

約数和(自身を除く): 211208060

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 397, 794, 1588, 1985, 1997, 3176, 3970, 3994, 7940, 7988, 9925, 9985, 15880, 15976, 19850, 19970, 39700, 39940, 49925, 79400, 79880, 99850, 199700, 399400, 792809, 1585618, 3171236, 3964045, 6342472, 7928090, 15856180, 19820225, 31712360, 39640450, 79280900, 158561800]

約数ペア:

[(1, 158561800), (2, 79280900), (4, 39640450), (5, 31712360), (8, 19820225), (10, 15856180), (20, 7928090), (25, 6342472), (40, 3964045), (50, 3171236), (100, 1585618), (200, 792809), (397, 399400), (794, 199700), (1588, 99850), (1985, 79880), (1997, 79400), (3176, 49925), (3970, 39940), (3994, 39700), (7940, 19970), (7988, 19850), (9925, 15976), (9985, 15880)]