19654580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{2179}}^1$

素因数の和:2240

約数の個数: 48

約数和(自身を含む): 46146240

約数和(自身を除く): 26491660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2179, 2255, 4358, 4510, 8716, 9020, 10895, 21790, 23969, 43580, 47938, 89339, 95876, 119845, 178678, 239690, 357356, 446695, 479380, 893390, 982729, 1786780, 1965458, 3930916, 4913645, 9827290, 19654580]

約数ペア:

[(1, 19654580), (2, 9827290), (4, 4913645), (5, 3930916), (10, 1965458), (11, 1786780), (20, 982729), (22, 893390), (41, 479380), (44, 446695), (55, 357356), (82, 239690), (110, 178678), (164, 119845), (205, 95876), (220, 89339), (410, 47938), (451, 43580), (820, 23969), (902, 21790), (1804, 10895), (2179, 9020), (2255, 8716), (4358, 4510)]