826009780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{79}}^1\times {\mathrm{311}}^1$

素因数の和:481

約数の個数: 72

約数和(自身を含む): 1806255360

約数和(自身を除く): 980245580

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 158, 164, 205, 311, 316, 395, 410, 622, 790, 820, 1244, 1555, 1580, 1681, 3110, 3239, 3362, 6220, 6478, 6724, 8405, 12751, 12956, 16195, 16810, 24569, 25502, 32390, 33620, 49138, 51004, 63755, 64780, 98276, 122845, 127510, 132799, 245690, 255020, 265598, 491380, 522791, 531196, 663995, 1007329, 1045582, 1327990, 2014658, 2091164, 2613955, 2655980, 4029316, 5036645, 5227910, 10073290, 10455820, 20146580, 41300489, 82600978, 165201956, 206502445, 413004890, 826009780]

約数ペア:

[(1, 826009780), (2, 413004890), (4, 206502445), (5, 165201956), (10, 82600978), (20, 41300489), (41, 20146580), (79, 10455820), (82, 10073290), (158, 5227910), (164, 5036645), (205, 4029316), (311, 2655980), (316, 2613955), (395, 2091164), (410, 2014658), (622, 1327990), (790, 1045582), (820, 1007329), (1244, 663995), (1555, 531196), (1580, 522791), (1681, 491380), (3110, 265598), (3239, 255020), (3362, 245690), (6220, 132799), (6478, 127510), (6724, 122845), (8405, 98276), (12751, 64780), (12956, 63755), (16195, 51004), (16810, 49138), (24569, 33620), (25502, 32390)]