21801280

素因数分解:

$2^6\times 5^1\times {\mathrm{193}}^1\times {\mathrm{353}}^1$

素因数の和:563

約数の個数: 56

約数和(自身を含む): 52331112

約数和(自身を除く): 30529832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 193, 320, 353, 386, 706, 772, 965, 1412, 1544, 1765, 1930, 2824, 3088, 3530, 3860, 5648, 6176, 7060, 7720, 11296, 12352, 14120, 15440, 22592, 28240, 30880, 56480, 61760, 68129, 112960, 136258, 272516, 340645, 545032, 681290, 1090064, 1362580, 2180128, 2725160, 4360256, 5450320, 10900640, 21801280]

約数ペア:

[(1, 21801280), (2, 10900640), (4, 5450320), (5, 4360256), (8, 2725160), (10, 2180128), (16, 1362580), (20, 1090064), (32, 681290), (40, 545032), (64, 340645), (80, 272516), (160, 136258), (193, 112960), (320, 68129), (353, 61760), (386, 56480), (706, 30880), (772, 28240), (965, 22592), (1412, 15440), (1544, 14120), (1765, 12352), (1930, 11296), (2824, 7720), (3088, 7060), (3530, 6176), (3860, 5648)]