49981225

素因数分解:

$5^2\times 7^2\times {\mathrm{40801}}^1$

素因数の和:40825

約数の個数: 18

約数和(自身を含む): 72097134

約数和(自身を除く): 22115909

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 40801, 204005, 285607, 1020025, 1428035, 1999249, 7140175, 9996245, 49981225]

約数ペア:

[(1, 49981225), (5, 9996245), (7, 7140175), (25, 1999249), (35, 1428035), (49, 1020025), (175, 285607), (245, 204005), (1225, 40801)]