27920420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{709}}^1$

素因数の和:908

約数の個数: 48

約数和(自身を含む): 64411200

約数和(自身を除く): 36490780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 179, 220, 358, 709, 716, 895, 1418, 1790, 1969, 2836, 3545, 3580, 3938, 7090, 7799, 7876, 9845, 14180, 15598, 19690, 31196, 38995, 39380, 77990, 126911, 155980, 253822, 507644, 634555, 1269110, 1396021, 2538220, 2792042, 5584084, 6980105, 13960210, 27920420]

約数ペア:

[(1, 27920420), (2, 13960210), (4, 6980105), (5, 5584084), (10, 2792042), (11, 2538220), (20, 1396021), (22, 1269110), (44, 634555), (55, 507644), (110, 253822), (179, 155980), (220, 126911), (358, 77990), (709, 39380), (716, 38995), (895, 31196), (1418, 19690), (1790, 15598), (1969, 14180), (2836, 9845), (3545, 7876), (3580, 7799), (3938, 7090)]