19162520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{857}}^1$

素因数の和:924

約数の個数: 64

約数和(自身を含む): 47567520

約数和(自身を除く): 28405000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 857, 860, 1118, 1714, 1720, 2236, 2795, 3428, 4285, 4472, 5590, 6856, 8570, 11141, 11180, 17140, 22282, 22360, 34280, 36851, 44564, 55705, 73702, 89128, 111410, 147404, 184255, 222820, 294808, 368510, 445640, 479063, 737020, 958126, 1474040, 1916252, 2395315, 3832504, 4790630, 9581260, 19162520]

約数ペア:

[(1, 19162520), (2, 9581260), (4, 4790630), (5, 3832504), (8, 2395315), (10, 1916252), (13, 1474040), (20, 958126), (26, 737020), (40, 479063), (43, 445640), (52, 368510), (65, 294808), (86, 222820), (104, 184255), (130, 147404), (172, 111410), (215, 89128), (260, 73702), (344, 55705), (430, 44564), (520, 36851), (559, 34280), (857, 22360), (860, 22282), (1118, 17140), (1714, 11180), (1720, 11141), (2236, 8570), (2795, 6856), (3428, 5590), (4285, 4472)]