18888640

素因数分解:

$2^6\times 5^1\times {\mathrm{67}}^1\times {\mathrm{881}}^1$

素因数の和:965

約数の個数: 56

約数和(自身を含む): 45701712

約数和(自身を除く): 26813072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 134, 160, 268, 320, 335, 536, 670, 881, 1072, 1340, 1762, 2144, 2680, 3524, 4288, 4405, 5360, 7048, 8810, 10720, 14096, 17620, 21440, 28192, 35240, 56384, 59027, 70480, 118054, 140960, 236108, 281920, 295135, 472216, 590270, 944432, 1180540, 1888864, 2361080, 3777728, 4722160, 9444320, 18888640]

約数ペア:

[(1, 18888640), (2, 9444320), (4, 4722160), (5, 3777728), (8, 2361080), (10, 1888864), (16, 1180540), (20, 944432), (32, 590270), (40, 472216), (64, 295135), (67, 281920), (80, 236108), (134, 140960), (160, 118054), (268, 70480), (320, 59027), (335, 56384), (536, 35240), (670, 28192), (881, 21440), (1072, 17620), (1340, 14096), (1762, 10720), (2144, 8810), (2680, 7048), (3524, 5360), (4288, 4405)]