18031220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{293}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 40452048

約数和(自身を除く): 22420828

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 181, 293, 340, 362, 586, 724, 905, 1172, 1465, 1810, 2930, 3077, 3620, 4981, 5860, 6154, 9962, 12308, 15385, 19924, 24905, 30770, 49810, 53033, 61540, 99620, 106066, 212132, 265165, 530330, 901561, 1060660, 1803122, 3606244, 4507805, 9015610, 18031220]

約数ペア:

[(1, 18031220), (2, 9015610), (4, 4507805), (5, 3606244), (10, 1803122), (17, 1060660), (20, 901561), (34, 530330), (68, 265165), (85, 212132), (170, 106066), (181, 99620), (293, 61540), (340, 53033), (362, 49810), (586, 30770), (724, 24905), (905, 19924), (1172, 15385), (1465, 12308), (1810, 9962), (2930, 6154), (3077, 5860), (3620, 4981)]