81636040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{443}}^1$

素因数の和:742

約数の個数: 64

約数和(自身を含む): 195644160

約数和(自身を除く): 114008120

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 271, 340, 443, 542, 680, 886, 1084, 1355, 1772, 2168, 2215, 2710, 3544, 4430, 4607, 5420, 7531, 8860, 9214, 10840, 15062, 17720, 18428, 23035, 30124, 36856, 37655, 46070, 60248, 75310, 92140, 120053, 150620, 184280, 240106, 301240, 480212, 600265, 960424, 1200530, 2040901, 2401060, 4081802, 4802120, 8163604, 10204505, 16327208, 20409010, 40818020, 81636040]

約数ペア:

[(1, 81636040), (2, 40818020), (4, 20409010), (5, 16327208), (8, 10204505), (10, 8163604), (17, 4802120), (20, 4081802), (34, 2401060), (40, 2040901), (68, 1200530), (85, 960424), (136, 600265), (170, 480212), (271, 301240), (340, 240106), (443, 184280), (542, 150620), (680, 120053), (886, 92140), (1084, 75310), (1355, 60248), (1772, 46070), (2168, 37655), (2215, 36856), (2710, 30124), (3544, 23035), (4430, 18428), (4607, 17720), (5420, 15062), (7531, 10840), (8860, 9214)]