680427080

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{239587}}^1$

素因数の和:239669

約数の個数: 32

約数和(自身を含む): 1552530240

約数和(自身を除く): 872103160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 239587, 479174, 958348, 1197935, 1916696, 2395870, 4791740, 9583480, 17010677, 34021354, 68042708, 85053385, 136085416, 170106770, 340213540, 680427080]

約数ペア:

[(1, 680427080), (2, 340213540), (4, 170106770), (5, 136085416), (8, 85053385), (10, 68042708), (20, 34021354), (40, 17010677), (71, 9583480), (142, 4791740), (284, 2395870), (355, 1916696), (568, 1197935), (710, 958348), (1420, 479174), (2840, 239587)]