20926640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37369}}^1$

素因数の和:37389

約数の個数: 40

約数和(自身を含む): 55606560

約数和(自身を除く): 34679920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37369, 74738, 149476, 186845, 261583, 298952, 373690, 523166, 597904, 747380, 1046332, 1307915, 1494760, 2092664, 2615830, 2989520, 4185328, 5231660, 10463320, 20926640]

約数ペア:

[(1, 20926640), (2, 10463320), (4, 5231660), (5, 4185328), (7, 2989520), (8, 2615830), (10, 2092664), (14, 1494760), (16, 1307915), (20, 1046332), (28, 747380), (35, 597904), (40, 523166), (56, 373690), (70, 298952), (80, 261583), (112, 186845), (140, 149476), (280, 74738), (560, 37369)]