20438700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{193}}^1\times {\mathrm{353}}^1$

素因数の和:563

約数の個数: 72

約数和(自身を含む): 59610768

約数和(自身を除く): 39172068

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 193, 300, 353, 386, 579, 706, 772, 965, 1059, 1158, 1412, 1765, 1930, 2118, 2316, 2895, 3530, 3860, 4236, 4825, 5295, 5790, 7060, 8825, 9650, 10590, 11580, 14475, 17650, 19300, 21180, 26475, 28950, 35300, 52950, 57900, 68129, 105900, 136258, 204387, 272516, 340645, 408774, 681290, 817548, 1021935, 1362580, 1703225, 2043870, 3406450, 4087740, 5109675, 6812900, 10219350, 20438700]

約数ペア:

[(1, 20438700), (2, 10219350), (3, 6812900), (4, 5109675), (5, 4087740), (6, 3406450), (10, 2043870), (12, 1703225), (15, 1362580), (20, 1021935), (25, 817548), (30, 681290), (50, 408774), (60, 340645), (75, 272516), (100, 204387), (150, 136258), (193, 105900), (300, 68129), (353, 57900), (386, 52950), (579, 35300), (706, 28950), (772, 26475), (965, 21180), (1059, 19300), (1158, 17650), (1412, 14475), (1765, 11580), (1930, 10590), (2118, 9650), (2316, 8825), (2895, 7060), (3530, 5790), (3860, 5295), (4236, 4825)]