31218375

素因数分解:

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

素因数の和:177

約数の個数: 64

約数和(自身を含む): 56609280

約数和(自身を除く): 25390905

約数列:

[1, 3, 5, 15, 17, 25, 51, 59, 75, 83, 85, 125, 177, 249, 255, 295, 375, 415, 425, 885, 1003, 1245, 1275, 1411, 1475, 2075, 2125, 3009, 4233, 4425, 4897, 5015, 6225, 6375, 7055, 7375, 10375, 14691, 15045, 21165, 22125, 24485, 25075, 31125, 35275, 73455, 75225, 83249, 105825, 122425, 125375, 176375, 249747, 367275, 376125, 416245, 529125, 612125, 1248735, 1836375, 2081225, 6243675, 10406125, 31218375]

約数ペア:

[(1, 31218375), (3, 10406125), (5, 6243675), (15, 2081225), (17, 1836375), (25, 1248735), (51, 612125), (59, 529125), (75, 416245), (83, 376125), (85, 367275), (125, 249747), (177, 176375), (249, 125375), (255, 122425), (295, 105825), (375, 83249), (415, 75225), (425, 73455), (885, 35275), (1003, 31125), (1245, 25075), (1275, 24485), (1411, 22125), (1475, 21165), (2075, 15045), (2125, 14691), (3009, 10375), (4233, 7375), (4425, 7055), (4897, 6375), (5015, 6225)]