199813520

素因数分解:

$2^4\times 5^1\times {\mathrm{1049}}^1\times {\mathrm{2381}}^1$

素因数の和:3443

約数の個数: 40

約数和(自身を含む): 465204600

約数和(自身を除く): 265391080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1049, 2098, 2381, 4196, 4762, 5245, 8392, 9524, 10490, 11905, 16784, 19048, 20980, 23810, 38096, 41960, 47620, 83920, 95240, 190480, 2497669, 4995338, 9990676, 12488345, 19981352, 24976690, 39962704, 49953380, 99906760, 199813520]

約数ペア:

[(1, 199813520), (2, 99906760), (4, 49953380), (5, 39962704), (8, 24976690), (10, 19981352), (16, 12488345), (20, 9990676), (40, 4995338), (80, 2497669), (1049, 190480), (2098, 95240), (2381, 83920), (4196, 47620), (4762, 41960), (5245, 38096), (8392, 23810), (9524, 20980), (10490, 19048), (11905, 16784)]