19802080

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5381}}^1$

素因数の和:5419

約数の個数: 48

約数和(自身を含む): 48825504

約数和(自身を除く): 29023424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 5381, 10762, 21524, 26905, 43048, 53810, 86096, 107620, 123763, 172192, 215240, 247526, 430480, 495052, 618815, 860960, 990104, 1237630, 1980208, 2475260, 3960416, 4950520, 9901040, 19802080]

約数ペア:

[(1, 19802080), (2, 9901040), (4, 4950520), (5, 3960416), (8, 2475260), (10, 1980208), (16, 1237630), (20, 990104), (23, 860960), (32, 618815), (40, 495052), (46, 430480), (80, 247526), (92, 215240), (115, 172192), (160, 123763), (184, 107620), (230, 86096), (368, 53810), (460, 43048), (736, 26905), (920, 21524), (1840, 10762), (3680, 5381)]