156964438520

素因数分解:

$2^3\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{1963037}}^1$

素因数の和:1965047

約数の個数: 32

約数和(自身を含む): 353346840000

約数和(自身を除く): 196382401480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1999, 3998, 7996, 9995, 15992, 19990, 39980, 79960, 1963037, 3926074, 7852148, 9815185, 15704296, 19630370, 39260740, 78521480, 3924110963, 7848221926, 15696443852, 19620554815, 31392887704, 39241109630, 78482219260, 156964438520]

約数ペア:

[(1, 156964438520), (2, 78482219260), (4, 39241109630), (5, 31392887704), (8, 19620554815), (10, 15696443852), (20, 7848221926), (40, 3924110963), (1999, 78521480), (3998, 39260740), (7996, 19630370), (9995, 15704296), (15992, 9815185), (19990, 7852148), (39980, 3926074), (79960, 1963037)]