31661840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:265

約数の個数: 120

約数和(自身を含む): 88166232

約数和(自身を除く): 56504392

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 49, 56, 70, 80, 82, 98, 112, 140, 164, 196, 197, 205, 245, 280, 287, 328, 392, 394, 410, 490, 560, 574, 656, 784, 788, 820, 980, 985, 1148, 1379, 1435, 1576, 1640, 1960, 1970, 2009, 2296, 2758, 2870, 3152, 3280, 3920, 3940, 4018, 4592, 5516, 5740, 6895, 7880, 8036, 8077, 9653, 10045, 11032, 11480, 13790, 15760, 16072, 16154, 19306, 20090, 22064, 22960, 27580, 32144, 32308, 38612, 40180, 40385, 48265, 55160, 56539, 64616, 77224, 80360, 80770, 96530, 110320, 113078, 129232, 154448, 160720, 161540, 193060, 226156, 282695, 323080, 386120, 395773, 452312, 565390, 646160, 772240, 791546, 904624, 1130780, 1583092, 1978865, 2261560, 3166184, 3957730, 4523120, 6332368, 7915460, 15830920, 31661840]

約数ペア:

[(1, 31661840), (2, 15830920), (4, 7915460), (5, 6332368), (7, 4523120), (8, 3957730), (10, 3166184), (14, 2261560), (16, 1978865), (20, 1583092), (28, 1130780), (35, 904624), (40, 791546), (41, 772240), (49, 646160), (56, 565390), (70, 452312), (80, 395773), (82, 386120), (98, 323080), (112, 282695), (140, 226156), (164, 193060), (196, 161540), (197, 160720), (205, 154448), (245, 129232), (280, 113078), (287, 110320), (328, 96530), (392, 80770), (394, 80360), (410, 77224), (490, 64616), (560, 56539), (574, 55160), (656, 48265), (784, 40385), (788, 40180), (820, 38612), (980, 32308), (985, 32144), (1148, 27580), (1379, 22960), (1435, 22064), (1576, 20090), (1640, 19306), (1960, 16154), (1970, 16072), (2009, 15760), (2296, 13790), (2758, 11480), (2870, 11032), (3152, 10045), (3280, 9653), (3920, 8077), (3940, 8036), (4018, 7880), (4592, 6895), (5516, 5740)]