20216080

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{10987}}^1$

素因数の和:11023

約数の個数: 40

約数和(自身を含む): 49050432

約数和(自身を除く): 28834352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 10987, 21974, 43948, 54935, 87896, 109870, 175792, 219740, 252701, 439480, 505402, 878960, 1010804, 1263505, 2021608, 2527010, 4043216, 5054020, 10108040, 20216080]

約数ペア:

[(1, 20216080), (2, 10108040), (4, 5054020), (5, 4043216), (8, 2527010), (10, 2021608), (16, 1263505), (20, 1010804), (23, 878960), (40, 505402), (46, 439480), (80, 252701), (92, 219740), (115, 175792), (184, 109870), (230, 87896), (368, 54935), (460, 43948), (920, 21974), (1840, 10987)]