72885020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{280327}}^1$

素因数の和:280349

約数の個数: 24

約数和(自身を含む): 164832864

約数和(自身を除く): 91947844

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 280327, 560654, 1121308, 1401635, 2803270, 3644251, 5606540, 7288502, 14577004, 18221255, 36442510, 72885020]

約数ペア:

[(1, 72885020), (2, 36442510), (4, 18221255), (5, 14577004), (10, 7288502), (13, 5606540), (20, 3644251), (26, 2803270), (52, 1401635), (65, 1121308), (130, 560654), (260, 280327)]