205889905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{3359}}^1$

素因数の和:3441

約数の個数: 32

約数和(自身を含む): 284497920

約数和(自身を除く): 78608015

約数列:

[1, 5, 13, 23, 41, 65, 115, 205, 299, 533, 943, 1495, 2665, 3359, 4715, 12259, 16795, 43667, 61295, 77257, 137719, 218335, 386285, 688595, 1004341, 1790347, 3167537, 5021705, 8951735, 15837685, 41177981, 205889905]

約数ペア:

[(1, 205889905), (5, 41177981), (13, 15837685), (23, 8951735), (41, 5021705), (65, 3167537), (115, 1790347), (205, 1004341), (299, 688595), (533, 386285), (943, 218335), (1495, 137719), (2665, 77257), (3359, 61295), (4715, 43667), (12259, 16795)]