18786440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1301}}^1$

素因数の和:1350

約数の個数: 48

約数和(自身を含む): 44645580

約数和(自身を除く): 25859140

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1301, 1444, 1805, 2602, 2888, 3610, 5204, 6505, 7220, 10408, 13010, 14440, 24719, 26020, 49438, 52040, 98876, 123595, 197752, 247190, 469661, 494380, 939322, 988760, 1878644, 2348305, 3757288, 4696610, 9393220, 18786440]

約数ペア:

[(1, 18786440), (2, 9393220), (4, 4696610), (5, 3757288), (8, 2348305), (10, 1878644), (19, 988760), (20, 939322), (38, 494380), (40, 469661), (76, 247190), (95, 197752), (152, 123595), (190, 98876), (361, 52040), (380, 49438), (722, 26020), (760, 24719), (1301, 14440), (1444, 13010), (1805, 10408), (2602, 7220), (2888, 6505), (3610, 5204)]