309611975

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{509}}^1\times {\mathrm{839}}^1$

素因数の和:1387

約数の個数: 24

約数和(自身を含む): 398412000

約数和(自身を除く): 88800025

約数列:

[1, 5, 25, 29, 145, 509, 725, 839, 2545, 4195, 12725, 14761, 20975, 24331, 73805, 121655, 369025, 427051, 608275, 2135255, 10676275, 12384479, 61922395, 309611975]

約数ペア:

[(1, 309611975), (5, 61922395), (25, 12384479), (29, 10676275), (145, 2135255), (509, 608275), (725, 427051), (839, 369025), (2545, 121655), (4195, 73805), (12725, 24331), (14761, 20975)]