2655980

素因数分解:

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

素因数の和:170

約数の個数: 36

約数和(自身を含む): 5789280

約数和(自身を除く): 3133300

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 158, 164, 205, 316, 395, 410, 790, 820, 1580, 1681, 3239, 3362, 6478, 6724, 8405, 12956, 16195, 16810, 32390, 33620, 64780, 132799, 265598, 531196, 663995, 1327990, 2655980]

約数ペア:

[(1, 2655980), (2, 1327990), (4, 663995), (5, 531196), (10, 265598), (20, 132799), (41, 64780), (79, 33620), (82, 32390), (158, 16810), (164, 16195), (205, 12956), (316, 8405), (395, 6724), (410, 6478), (790, 3362), (820, 3239), (1580, 1681)]