18917775

素因数分解:

$3^2\times 5^2\times {\mathrm{83}}^1\times {\mathrm{1013}}^1$

素因数の和:1112

約数の個数: 36

約数和(自身を含む): 34325928

約数和(自身を除く): 15408153

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 83, 225, 249, 415, 747, 1013, 1245, 2075, 3039, 3735, 5065, 6225, 9117, 15195, 18675, 25325, 45585, 75975, 84079, 227925, 252237, 420395, 756711, 1261185, 2101975, 3783555, 6305925, 18917775]

約数ペア:

[(1, 18917775), (3, 6305925), (5, 3783555), (9, 2101975), (15, 1261185), (25, 756711), (45, 420395), (75, 252237), (83, 227925), (225, 84079), (249, 75975), (415, 45585), (747, 25325), (1013, 18675), (1245, 15195), (2075, 9117), (3039, 6225), (3735, 5065)]