128366960

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{15887}}^1$

素因数の和:16001

約数の個数: 40

約数和(自身を含む): 301427136

約数和(自身を除く): 173060176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 4040, 8080, 15887, 31774, 63548, 79435, 127096, 158870, 254192, 317740, 635480, 1270960, 1604587, 3209174, 6418348, 8022935, 12836696, 16045870, 25673392, 32091740, 64183480, 128366960]

約数ペア:

[(1, 128366960), (2, 64183480), (4, 32091740), (5, 25673392), (8, 16045870), (10, 12836696), (16, 8022935), (20, 6418348), (40, 3209174), (80, 1604587), (101, 1270960), (202, 635480), (404, 317740), (505, 254192), (808, 158870), (1010, 127096), (1616, 79435), (2020, 63548), (4040, 31774), (8080, 15887)]