81671640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{680597}}^1$

素因数の和:680611

約数の個数: 32

約数和(自身を含む): 245015280

約数和(自身を除く): 163343640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 680597, 1361194, 2041791, 2722388, 3402985, 4083582, 5444776, 6805970, 8167164, 10208955, 13611940, 16334328, 20417910, 27223880, 40835820, 81671640]

約数ペア:

[(1, 81671640), (2, 40835820), (3, 27223880), (4, 20417910), (5, 16334328), (6, 13611940), (8, 10208955), (10, 8167164), (12, 6805970), (15, 5444776), (20, 4083582), (24, 3402985), (30, 2722388), (40, 2041791), (60, 1361194), (120, 680597)]