9952780

素因数分解:

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

素因数の和:286

約数の個数: 48

約数和(自身を含む): 21821184

約数和(自身を除く): 11868404

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 142, 163, 172, 215, 284, 326, 355, 430, 652, 710, 815, 860, 1420, 1630, 3053, 3260, 6106, 7009, 11573, 12212, 14018, 15265, 23146, 28036, 30530, 35045, 46292, 57865, 61060, 70090, 115730, 140180, 231460, 497639, 995278, 1990556, 2488195, 4976390, 9952780]

約数ペア:

[(1, 9952780), (2, 4976390), (4, 2488195), (5, 1990556), (10, 995278), (20, 497639), (43, 231460), (71, 140180), (86, 115730), (142, 70090), (163, 61060), (172, 57865), (215, 46292), (284, 35045), (326, 30530), (355, 28036), (430, 23146), (652, 15265), (710, 14018), (815, 12212), (860, 11573), (1420, 7009), (1630, 6106), (3053, 3260)]