80854520

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{12401}}^1$

素因数の和:12575

約数の個数: 32

約数和(自身を含む): 183053520

約数和(自身を除く): 102199000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 12401, 24802, 49604, 62005, 99208, 124010, 248020, 496040, 2021363, 4042726, 8085452, 10106815, 16170904, 20213630, 40427260, 80854520]

約数ペア:

[(1, 80854520), (2, 40427260), (4, 20213630), (5, 16170904), (8, 10106815), (10, 8085452), (20, 4042726), (40, 2021363), (163, 496040), (326, 248020), (652, 124010), (815, 99208), (1304, 62005), (1630, 49604), (3260, 24802), (6520, 12401)]