9991125

素因数分解:

$3^2\times 5^3\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:211

約数の個数: 48

約数和(自身を含む): 18398016

約数和(自身を除く): 8406891

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 83, 107, 125, 225, 249, 321, 375, 415, 535, 747, 963, 1125, 1245, 1605, 2075, 2675, 3735, 4815, 6225, 8025, 8881, 10375, 13375, 18675, 24075, 26643, 31125, 40125, 44405, 79929, 93375, 120375, 133215, 222025, 399645, 666075, 1110125, 1998225, 3330375, 9991125]

約数ペア:

[(1, 9991125), (3, 3330375), (5, 1998225), (9, 1110125), (15, 666075), (25, 399645), (45, 222025), (75, 133215), (83, 120375), (107, 93375), (125, 79929), (225, 44405), (249, 40125), (321, 31125), (375, 26643), (415, 24075), (535, 18675), (747, 13375), (963, 10375), (1125, 8881), (1245, 8025), (1605, 6225), (2075, 4815), (2675, 3735)]