19907240

素因数分解:

$2^3\times 5^1\times {\mathrm{479}}^1\times {\mathrm{1039}}^1$

素因数の和:1529

約数の個数: 32

約数和(自身を含む): 44928000

約数和(自身を除く): 25020760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 479, 958, 1039, 1916, 2078, 2395, 3832, 4156, 4790, 5195, 8312, 9580, 10390, 19160, 20780, 41560, 497681, 995362, 1990724, 2488405, 3981448, 4976810, 9953620, 19907240]

約数ペア:

[(1, 19907240), (2, 9953620), (4, 4976810), (5, 3981448), (8, 2488405), (10, 1990724), (20, 995362), (40, 497681), (479, 41560), (958, 20780), (1039, 19160), (1916, 10390), (2078, 9580), (2395, 8312), (3832, 5195), (4156, 4790)]