39811120

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:290

約数の個数: 80

約数和(自身を含む): 96636672

約数和(自身を除く): 56825552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 71, 80, 86, 142, 163, 172, 215, 284, 326, 344, 355, 430, 568, 652, 688, 710, 815, 860, 1136, 1304, 1420, 1630, 1720, 2608, 2840, 3053, 3260, 3440, 5680, 6106, 6520, 7009, 11573, 12212, 13040, 14018, 15265, 23146, 24424, 28036, 30530, 35045, 46292, 48848, 56072, 57865, 61060, 70090, 92584, 112144, 115730, 122120, 140180, 185168, 231460, 244240, 280360, 462920, 497639, 560720, 925840, 995278, 1990556, 2488195, 3981112, 4976390, 7962224, 9952780, 19905560, 39811120]

約数ペア:

[(1, 39811120), (2, 19905560), (4, 9952780), (5, 7962224), (8, 4976390), (10, 3981112), (16, 2488195), (20, 1990556), (40, 995278), (43, 925840), (71, 560720), (80, 497639), (86, 462920), (142, 280360), (163, 244240), (172, 231460), (215, 185168), (284, 140180), (326, 122120), (344, 115730), (355, 112144), (430, 92584), (568, 70090), (652, 61060), (688, 57865), (710, 56072), (815, 48848), (860, 46292), (1136, 35045), (1304, 30530), (1420, 28036), (1630, 24424), (1720, 23146), (2608, 15265), (2840, 14018), (3053, 13040), (3260, 12212), (3440, 11573), (5680, 7009), (6106, 6520)]