78428180

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{135221}}^1$

素因数の和:135259

約数の個数: 24

約数和(自身を含む): 170379720

約数和(自身を除く): 91951540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 135221, 270442, 540884, 676105, 1352210, 2704420, 3921409, 7842818, 15685636, 19607045, 39214090, 78428180]

約数ペア:

[(1, 78428180), (2, 39214090), (4, 19607045), (5, 15685636), (10, 7842818), (20, 3921409), (29, 2704420), (58, 1352210), (116, 676105), (145, 540884), (290, 270442), (580, 135221)]