81584540

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{140663}}^1$

素因数の和:140701

約数の個数: 24

約数和(自身を含む): 177236640

約数和(自身を除く): 95652100

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 140663, 281326, 562652, 703315, 1406630, 2813260, 4079227, 8158454, 16316908, 20396135, 40792270, 81584540]

約数ペア:

[(1, 81584540), (2, 40792270), (4, 20396135), (5, 16316908), (10, 8158454), (20, 4079227), (29, 2813260), (58, 1406630), (116, 703315), (145, 562652), (290, 281326), (580, 140663)]