77820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{1297}}^1$

素因数の和:1309

約数の個数: 24

約数和(自身を含む): 218064

約数和(自身を除く): 140244

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1297, 2594, 3891, 5188, 6485, 7782, 12970, 15564, 19455, 25940, 38910, 77820]

約数ペア:

[(1, 77820), (2, 38910), (3, 25940), (4, 19455), (5, 15564), (6, 12970), (10, 7782), (12, 6485), (15, 5188), (20, 3891), (30, 2594), (60, 1297)]