289442020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{263}}^1\times {\mathrm{1123}}^1$

素因数の和:1409

約数の個数: 72

約数和(自身を含む): 710385984

約数和(自身を除く): 420943964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 263, 490, 526, 980, 1052, 1123, 1315, 1841, 2246, 2630, 3682, 4492, 5260, 5615, 7364, 7861, 9205, 11230, 12887, 15722, 18410, 22460, 25774, 31444, 36820, 39305, 51548, 55027, 64435, 78610, 110054, 128870, 157220, 220108, 257740, 275135, 295349, 550270, 590698, 1100540, 1181396, 1476745, 2067443, 2953490, 4134886, 5906980, 8269772, 10337215, 14472101, 20674430, 28944202, 41348860, 57888404, 72360505, 144721010, 289442020]

約数ペア:

[(1, 289442020), (2, 144721010), (4, 72360505), (5, 57888404), (7, 41348860), (10, 28944202), (14, 20674430), (20, 14472101), (28, 10337215), (35, 8269772), (49, 5906980), (70, 4134886), (98, 2953490), (140, 2067443), (196, 1476745), (245, 1181396), (263, 1100540), (490, 590698), (526, 550270), (980, 295349), (1052, 275135), (1123, 257740), (1315, 220108), (1841, 157220), (2246, 128870), (2630, 110054), (3682, 78610), (4492, 64435), (5260, 55027), (5615, 51548), (7364, 39305), (7861, 36820), (9205, 31444), (11230, 25774), (12887, 22460), (15722, 18410)]