20109505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{857}}^1$

素因数の和:913

約数の個数: 24

約数和(自身を含む): 27459432

約数和(自身を除く): 7349927

約数列:

[1, 5, 13, 19, 65, 95, 247, 361, 857, 1235, 1805, 4285, 4693, 11141, 16283, 23465, 55705, 81415, 211679, 309377, 1058395, 1546885, 4021901, 20109505]

約数ペア:

[(1, 20109505), (5, 4021901), (13, 1546885), (19, 1058395), (65, 309377), (95, 211679), (247, 81415), (361, 55705), (857, 23465), (1235, 16283), (1805, 11141), (4285, 4693)]