80840140

素因数分解:

$2^2\times 5^1\times {\mathrm{1597}}^1\times {\mathrm{2531}}^1$

素因数の和:4137

約数の個数: 24

約数和(自身を含む): 169937712

約数和(自身を除く): 89097572

約数列:

[1, 2, 4, 5, 10, 20, 1597, 2531, 3194, 5062, 6388, 7985, 10124, 12655, 15970, 25310, 31940, 50620, 4042007, 8084014, 16168028, 20210035, 40420070, 80840140]

約数ペア:

[(1, 80840140), (2, 40420070), (4, 20210035), (5, 16168028), (10, 8084014), (20, 4042007), (1597, 50620), (2531, 31940), (3194, 25310), (5062, 15970), (6388, 12655), (7985, 10124)]