19647540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9923}}^1$

素因数の和:9949

約数の個数: 72

約数和(自身を含む): 65022048

約数和(自身を除く): 45374508

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 9923, 19846, 29769, 39692, 49615, 59538, 89307, 99230, 109153, 119076, 148845, 178614, 198460, 218306, 297690, 327459, 357228, 436612, 446535, 545765, 595380, 654918, 893070, 982377, 1091530, 1309836, 1637295, 1786140, 1964754, 2183060, 3274590, 3929508, 4911885, 6549180, 9823770, 19647540]

約数ペア:

[(1, 19647540), (2, 9823770), (3, 6549180), (4, 4911885), (5, 3929508), (6, 3274590), (9, 2183060), (10, 1964754), (11, 1786140), (12, 1637295), (15, 1309836), (18, 1091530), (20, 982377), (22, 893070), (30, 654918), (33, 595380), (36, 545765), (44, 446535), (45, 436612), (55, 357228), (60, 327459), (66, 297690), (90, 218306), (99, 198460), (110, 178614), (132, 148845), (165, 119076), (180, 109153), (198, 99230), (220, 89307), (330, 59538), (396, 49615), (495, 39692), (660, 29769), (990, 19846), (1980, 9923)]