180800980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{2791}}^1$

素因数の和:2920

約数の個数: 48

約数和(自身を含む): 394007040

約数和(自身を除く): 213206060

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 158, 164, 205, 316, 395, 410, 790, 820, 1580, 2791, 3239, 5582, 6478, 11164, 12956, 13955, 16195, 27910, 32390, 55820, 64780, 114431, 220489, 228862, 440978, 457724, 572155, 881956, 1102445, 1144310, 2204890, 2288620, 4409780, 9040049, 18080098, 36160196, 45200245, 90400490, 180800980]

約数ペア:

[(1, 180800980), (2, 90400490), (4, 45200245), (5, 36160196), (10, 18080098), (20, 9040049), (41, 4409780), (79, 2288620), (82, 2204890), (158, 1144310), (164, 1102445), (205, 881956), (316, 572155), (395, 457724), (410, 440978), (790, 228862), (820, 220489), (1580, 114431), (2791, 64780), (3239, 55820), (5582, 32390), (6478, 27910), (11164, 16195), (12956, 13955)]