18120820

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{13523}}^1$

素因数の和:13599

約数の個数: 24

約数和(自身を含む): 38624544

約数和(自身を除く): 20503724

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 13523, 27046, 54092, 67615, 135230, 270460, 906041, 1812082, 3624164, 4530205, 9060410, 18120820]

約数ペア:

[(1, 18120820), (2, 9060410), (4, 4530205), (5, 3624164), (10, 1812082), (20, 906041), (67, 270460), (134, 135230), (268, 67615), (335, 54092), (670, 27046), (1340, 13523)]