51287020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{82721}}^1$

素因数の和:82761

約数の個数: 24

約数和(自身を含む): 111178368

約数和(自身を除く): 59891348

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 82721, 165442, 330884, 413605, 827210, 1654420, 2564351, 5128702, 10257404, 12821755, 25643510, 51287020]

約数ペア:

[(1, 51287020), (2, 25643510), (4, 12821755), (5, 10257404), (10, 5128702), (20, 2564351), (31, 1654420), (62, 827210), (124, 413605), (155, 330884), (310, 165442), (620, 82721)]