20741840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37039}}^1$

素因数の和:37059

約数の個数: 40

約数和(自身を含む): 55115520

約数和(自身を除く): 34373680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37039, 74078, 148156, 185195, 259273, 296312, 370390, 518546, 592624, 740780, 1037092, 1296365, 1481560, 2074184, 2592730, 2963120, 4148368, 5185460, 10370920, 20741840]

約数ペア:

[(1, 20741840), (2, 10370920), (4, 5185460), (5, 4148368), (7, 2963120), (8, 2592730), (10, 2074184), (14, 1481560), (16, 1296365), (20, 1037092), (28, 740780), (35, 592624), (40, 518546), (56, 370390), (70, 296312), (80, 259273), (112, 185195), (140, 148156), (280, 74078), (560, 37039)]