72639905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{281}}^1$

素因数の和:437

約数の個数: 32

約数和(自身を含む): 97499808

約数和(自身を除く): 24859903

約数列:

[1, 5, 13, 41, 65, 97, 205, 281, 485, 533, 1261, 1405, 2665, 3653, 3977, 6305, 11521, 18265, 19885, 27257, 51701, 57605, 136285, 149773, 258505, 354341, 748865, 1117537, 1771705, 5587685, 14527981, 72639905]

約数ペア:

[(1, 72639905), (5, 14527981), (13, 5587685), (41, 1771705), (65, 1117537), (97, 748865), (205, 354341), (281, 258505), (485, 149773), (533, 136285), (1261, 57605), (1405, 51701), (2665, 27257), (3653, 19885), (3977, 18265), (6305, 11521)]