17996985

素因数分解:

$3^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1201}}^1$

素因数の和:1255

約数の個数: 40

約数和(自身を含む): 33160776

約数和(自身を除く): 15163791

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 81, 111, 135, 185, 333, 405, 555, 999, 1201, 1665, 2997, 3603, 4995, 6005, 10809, 14985, 18015, 32427, 44437, 54045, 97281, 133311, 162135, 222185, 399933, 486405, 666555, 1199799, 1999665, 3599397, 5998995, 17996985]

約数ペア:

[(1, 17996985), (3, 5998995), (5, 3599397), (9, 1999665), (15, 1199799), (27, 666555), (37, 486405), (45, 399933), (81, 222185), (111, 162135), (135, 133311), (185, 97281), (333, 54045), (405, 44437), (555, 32427), (999, 18015), (1201, 14985), (1665, 10809), (2997, 6005), (3603, 4995)]