202488520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{389401}}^1$

素因数の和:389425

約数の個数: 32

約数和(自身を含む): 490646520

約数和(自身を除く): 288158000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 389401, 778802, 1557604, 1947005, 3115208, 3894010, 5062213, 7788020, 10124426, 15576040, 20248852, 25311065, 40497704, 50622130, 101244260, 202488520]

約数ペア:

[(1, 202488520), (2, 101244260), (4, 50622130), (5, 40497704), (8, 25311065), (10, 20248852), (13, 15576040), (20, 10124426), (26, 7788020), (40, 5062213), (52, 3894010), (65, 3115208), (104, 1947005), (130, 1557604), (260, 778802), (520, 389401)]