681738220

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{382999}}^1$

素因数の和:383097

約数の個数: 24

約数和(自身を含む): 1447740000

約数和(自身を除く): 766001780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 382999, 765998, 1531996, 1914995, 3829990, 7659980, 34086911, 68173822, 136347644, 170434555, 340869110, 681738220]

約数ペア:

[(1, 681738220), (2, 340869110), (4, 170434555), (5, 136347644), (10, 68173822), (20, 34086911), (89, 7659980), (178, 3829990), (356, 1914995), (445, 1531996), (890, 765998), (1780, 382999)]