18731025

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1$

素因数の和:175

約数の個数: 72

約数和(自身を含む): 36560160

約数和(自身を除く): 17829135

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 59, 75, 83, 85, 153, 177, 225, 249, 255, 295, 415, 425, 531, 747, 765, 885, 1003, 1245, 1275, 1411, 1475, 2075, 2655, 3009, 3735, 3825, 4233, 4425, 4897, 5015, 6225, 7055, 9027, 12699, 13275, 14691, 15045, 18675, 21165, 24485, 25075, 35275, 44073, 45135, 63495, 73455, 75225, 83249, 105825, 122425, 220365, 225675, 249747, 317475, 367275, 416245, 749241, 1101825, 1248735, 2081225, 3746205, 6243675, 18731025]

約数ペア:

[(1, 18731025), (3, 6243675), (5, 3746205), (9, 2081225), (15, 1248735), (17, 1101825), (25, 749241), (45, 416245), (51, 367275), (59, 317475), (75, 249747), (83, 225675), (85, 220365), (153, 122425), (177, 105825), (225, 83249), (249, 75225), (255, 73455), (295, 63495), (415, 45135), (425, 44073), (531, 35275), (747, 25075), (765, 24485), (885, 21165), (1003, 18675), (1245, 15045), (1275, 14691), (1411, 13275), (1475, 12699), (2075, 9027), (2655, 7055), (3009, 6225), (3735, 5015), (3825, 4897), (4233, 4425)]