13281205

素因数分解:

$5^1\times 7^2\times {\mathrm{151}}^1\times {\mathrm{359}}^1$

素因数の和:529

約数の個数: 24

約数和(自身を含む): 18714240

約数和(自身を除く): 5433035

約数列:

[1, 5, 7, 35, 49, 151, 245, 359, 755, 1057, 1795, 2513, 5285, 7399, 12565, 17591, 36995, 54209, 87955, 271045, 379463, 1897315, 2656241, 13281205]

約数ペア:

[(1, 13281205), (5, 2656241), (7, 1897315), (35, 379463), (49, 271045), (151, 87955), (245, 54209), (359, 36995), (755, 17591), (1057, 12565), (1795, 7399), (2513, 5285)]