81518570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1123}}^1$

素因数の和:1215

約数の個数: 64

約数和(自身を含む): 180631296

約数和(自身を除く): 99112726

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 61, 70, 85, 119, 122, 170, 238, 305, 427, 595, 610, 854, 1037, 1123, 1190, 2074, 2135, 2246, 4270, 5185, 5615, 7259, 7861, 10370, 11230, 14518, 15722, 19091, 36295, 38182, 39305, 68503, 72590, 78610, 95455, 133637, 137006, 190910, 267274, 342515, 479521, 668185, 685030, 959042, 1164551, 1336370, 2329102, 2397605, 4795210, 5822755, 8151857, 11645510, 16303714, 40759285, 81518570]

約数ペア:

[(1, 81518570), (2, 40759285), (5, 16303714), (7, 11645510), (10, 8151857), (14, 5822755), (17, 4795210), (34, 2397605), (35, 2329102), (61, 1336370), (70, 1164551), (85, 959042), (119, 685030), (122, 668185), (170, 479521), (238, 342515), (305, 267274), (427, 190910), (595, 137006), (610, 133637), (854, 95455), (1037, 78610), (1123, 72590), (1190, 68503), (2074, 39305), (2135, 38182), (2246, 36295), (4270, 19091), (5185, 15722), (5615, 14518), (7259, 11230), (7861, 10370)]