18987380

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{16091}}^1$

素因数の和:16159

約数の個数: 24

約数和(自身を含む): 40551840

約数和(自身を除く): 21564460

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180, 16091, 32182, 64364, 80455, 160910, 321820, 949369, 1898738, 3797476, 4746845, 9493690, 18987380]

約数ペア:

[(1, 18987380), (2, 9493690), (4, 4746845), (5, 3797476), (10, 1898738), (20, 949369), (59, 321820), (118, 160910), (236, 80455), (295, 64364), (590, 32182), (1180, 16091)]