28407505

素因数分解:

$5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2467}}^1$

素因数の和:2533

約数の個数: 24

約数和(自身を含む): 40514688

約数和(自身を除く): 12107183

約数列:

[1, 5, 7, 35, 47, 49, 235, 245, 329, 1645, 2303, 2467, 11515, 12335, 17269, 86345, 115949, 120883, 579745, 604415, 811643, 4058215, 5681501, 28407505]

約数ペア:

[(1, 28407505), (5, 5681501), (7, 4058215), (35, 811643), (47, 604415), (49, 579745), (235, 120883), (245, 115949), (329, 86345), (1645, 17269), (2303, 12335), (2467, 11515)]