81190004

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1\times {\mathrm{359}}^1$

素因数の和:608

約数の個数: 48

約数和(自身を含む): 167650560

約数和(自身を除く): 86460556

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 197, 287, 359, 394, 574, 718, 788, 1148, 1379, 1436, 2513, 2758, 5026, 5516, 8077, 10052, 14719, 16154, 29438, 32308, 56539, 58876, 70723, 103033, 113078, 141446, 206066, 226156, 282892, 412132, 495061, 990122, 1980244, 2899643, 5799286, 11598572, 20297501, 40595002, 81190004]

約数ペア:

[(1, 81190004), (2, 40595002), (4, 20297501), (7, 11598572), (14, 5799286), (28, 2899643), (41, 1980244), (82, 990122), (164, 495061), (197, 412132), (287, 282892), (359, 226156), (394, 206066), (574, 141446), (718, 113078), (788, 103033), (1148, 70723), (1379, 58876), (1436, 56539), (2513, 32308), (2758, 29438), (5026, 16154), (5516, 14719), (8077, 10052)]