420704260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{489191}}^1$

素因数の和:489243

約数の個数: 24

約数和(自身を含む): 904026816

約数和(自身を除く): 483322556

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 489191, 978382, 1956764, 2445955, 4891910, 9783820, 21035213, 42070426, 84140852, 105176065, 210352130, 420704260]

約数ペア:

[(1, 420704260), (2, 210352130), (4, 105176065), (5, 84140852), (10, 42070426), (20, 21035213), (43, 9783820), (86, 4891910), (172, 2445955), (215, 1956764), (430, 978382), (860, 489191)]