20404400

素因数分解:

$2^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{1759}}^1$

素因数の和:1806

約数の個数: 60

約数和(自身を含む): 50740800

約数和(自身を除く): 30336400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 50, 58, 80, 100, 116, 145, 200, 232, 290, 400, 464, 580, 725, 1160, 1450, 1759, 2320, 2900, 3518, 5800, 7036, 8795, 11600, 14072, 17590, 28144, 35180, 43975, 51011, 70360, 87950, 102022, 140720, 175900, 204044, 255055, 351800, 408088, 510110, 703600, 816176, 1020220, 1275275, 2040440, 2550550, 4080880, 5101100, 10202200, 20404400]

約数ペア:

[(1, 20404400), (2, 10202200), (4, 5101100), (5, 4080880), (8, 2550550), (10, 2040440), (16, 1275275), (20, 1020220), (25, 816176), (29, 703600), (40, 510110), (50, 408088), (58, 351800), (80, 255055), (100, 204044), (116, 175900), (145, 140720), (200, 102022), (232, 87950), (290, 70360), (400, 51011), (464, 43975), (580, 35180), (725, 28144), (1160, 17590), (1450, 14072), (1759, 11600), (2320, 8795), (2900, 7036), (3518, 5800)]