20990480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37483}}^1$

素因数の和:37503

約数の個数: 40

約数和(自身を含む): 55776192

約数和(自身を除く): 34785712

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37483, 74966, 149932, 187415, 262381, 299864, 374830, 524762, 599728, 749660, 1049524, 1311905, 1499320, 2099048, 2623810, 2998640, 4198096, 5247620, 10495240, 20990480]

約数ペア:

[(1, 20990480), (2, 10495240), (4, 5247620), (5, 4198096), (7, 2998640), (8, 2623810), (10, 2099048), (14, 1499320), (16, 1311905), (20, 1049524), (28, 749660), (35, 599728), (40, 524762), (56, 374830), (70, 299864), (80, 262381), (112, 187415), (140, 149932), (280, 74966), (560, 37483)]