72178225

素因数分解:

$5^2\times 7^2\times {\mathrm{58921}}^1$

素因数の和:58945

約数の個数: 18

約数和(自身を含む): 104115174

約数和(自身を除く): 31936949

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 58921, 294605, 412447, 1473025, 2062235, 2887129, 10311175, 14435645, 72178225]

約数ペア:

[(1, 72178225), (5, 14435645), (7, 10311175), (25, 2887129), (35, 2062235), (49, 1473025), (175, 412447), (245, 294605), (1225, 58921)]