78980815

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{641}}^1\times {\mathrm{1297}}^1$

素因数の和:1962

約数の個数: 16

約数和(自身を含む): 99997920

約数和(自身を除く): 21017105

約数列:

[1, 5, 19, 95, 641, 1297, 3205, 6485, 12179, 24643, 60895, 123215, 831377, 4156885, 15796163, 78980815]

約数ペア:

[(1, 78980815), (5, 15796163), (19, 4156885), (95, 831377), (641, 123215), (1297, 60895), (3205, 24643), (6485, 12179)]