18781452

素因数分解:

$2^2\times 3^2\times {\mathrm{521707}}^1$

素因数の和:521717

約数の個数: 18

約数和(自身を含む): 47475428

約数和(自身を除く): 28693976

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 521707, 1043414, 1565121, 2086828, 3130242, 4695363, 6260484, 9390726, 18781452]

約数ペア:

[(1, 18781452), (2, 9390726), (3, 6260484), (4, 4695363), (6, 3130242), (9, 2086828), (12, 1565121), (18, 1043414), (36, 521707)]