18718575

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 32664576

約数和(自身を除く): 13946001

約数列:

[1, 3, 5, 15, 25, 31, 75, 83, 93, 97, 155, 249, 291, 415, 465, 485, 775, 1245, 1455, 2075, 2325, 2425, 2573, 3007, 6225, 7275, 7719, 8051, 9021, 12865, 15035, 24153, 38595, 40255, 45105, 64325, 75175, 120765, 192975, 201275, 225525, 249581, 603825, 748743, 1247905, 3743715, 6239525, 18718575]

約数ペア:

[(1, 18718575), (3, 6239525), (5, 3743715), (15, 1247905), (25, 748743), (31, 603825), (75, 249581), (83, 225525), (93, 201275), (97, 192975), (155, 120765), (249, 75175), (291, 64325), (415, 45105), (465, 40255), (485, 38595), (775, 24153), (1245, 15035), (1455, 12865), (2075, 9021), (2325, 8051), (2425, 7719), (2573, 7275), (3007, 6225)]