19782008

素因数分解:

$2^3\times {\mathrm{41}}^2\times {\mathrm{1471}}^1$

素因数の和:1559

約数の個数: 24

約数和(自身を含む): 38043840

約数和(自身を除く): 18261832

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 1471, 1681, 2942, 3362, 5884, 6724, 11768, 13448, 60311, 120622, 241244, 482488, 2472751, 4945502, 9891004, 19782008]

約数ペア:

[(1, 19782008), (2, 9891004), (4, 4945502), (8, 2472751), (41, 482488), (82, 241244), (164, 120622), (328, 60311), (1471, 13448), (1681, 11768), (2942, 6724), (3362, 5884)]