681567340

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{5393}}^1$

素因数の和:5562

約数の個数: 48

約数和(自身を含む): 1468031040

約数和(自身を除く): 786463700

約数列:

[1, 2, 4, 5, 10, 20, 71, 89, 142, 178, 284, 355, 356, 445, 710, 890, 1420, 1780, 5393, 6319, 10786, 12638, 21572, 25276, 26965, 31595, 53930, 63190, 107860, 126380, 382903, 479977, 765806, 959954, 1531612, 1914515, 1919908, 2399885, 3829030, 4799770, 7658060, 9599540, 34078367, 68156734, 136313468, 170391835, 340783670, 681567340]

約数ペア:

[(1, 681567340), (2, 340783670), (4, 170391835), (5, 136313468), (10, 68156734), (20, 34078367), (71, 9599540), (89, 7658060), (142, 4799770), (178, 3829030), (284, 2399885), (355, 1919908), (356, 1914515), (445, 1531612), (710, 959954), (890, 765806), (1420, 479977), (1780, 382903), (5393, 126380), (6319, 107860), (10786, 63190), (12638, 53930), (21572, 31595), (25276, 26965)]