20426840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72953}}^1$

素因数の和:72971

約数の個数: 32

約数和(自身を含む): 52526880

約数和(自身を除く): 32100040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72953, 145906, 291812, 364765, 510671, 583624, 729530, 1021342, 1459060, 2042684, 2553355, 2918120, 4085368, 5106710, 10213420, 20426840]

約数ペア:

[(1, 20426840), (2, 10213420), (4, 5106710), (5, 4085368), (7, 2918120), (8, 2553355), (10, 2042684), (14, 1459060), (20, 1021342), (28, 729530), (35, 583624), (40, 510671), (56, 364765), (70, 291812), (140, 145906), (280, 72953)]