640273086

素因数分解:

$2^1\times 3^4\times {\mathrm{37}}^2\times {\mathrm{2887}}^1$

素因数の和:2975

約数の個数: 60

約数和(自身を含む): 1475020008

約数和(自身を除く): 834746922

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 81, 111, 162, 222, 333, 666, 999, 1369, 1998, 2738, 2887, 2997, 4107, 5774, 5994, 8214, 8661, 12321, 17322, 24642, 25983, 36963, 51966, 73926, 77949, 106819, 110889, 155898, 213638, 221778, 233847, 320457, 467694, 640914, 961371, 1922742, 2884113, 3952303, 5768226, 7904606, 8652339, 11856909, 17304678, 23713818, 35570727, 71141454, 106712181, 213424362, 320136543, 640273086]

約数ペア:

[(1, 640273086), (2, 320136543), (3, 213424362), (6, 106712181), (9, 71141454), (18, 35570727), (27, 23713818), (37, 17304678), (54, 11856909), (74, 8652339), (81, 7904606), (111, 5768226), (162, 3952303), (222, 2884113), (333, 1922742), (666, 961371), (999, 640914), (1369, 467694), (1998, 320457), (2738, 233847), (2887, 221778), (2997, 213638), (4107, 155898), (5774, 110889), (5994, 106819), (8214, 77949), (8661, 73926), (12321, 51966), (17322, 36963), (24642, 25983)]