20091680

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{17939}}^1$

素因数の和:17961

約数の個数: 48

約数和(自身を含む): 54250560

約数和(自身を除く): 34158880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 17939, 35878, 71756, 89695, 125573, 143512, 179390, 251146, 287024, 358780, 502292, 574048, 627865, 717560, 1004584, 1255730, 1435120, 2009168, 2511460, 2870240, 4018336, 5022920, 10045840, 20091680]

約数ペア:

[(1, 20091680), (2, 10045840), (4, 5022920), (5, 4018336), (7, 2870240), (8, 2511460), (10, 2009168), (14, 1435120), (16, 1255730), (20, 1004584), (28, 717560), (32, 627865), (35, 574048), (40, 502292), (56, 358780), (70, 287024), (80, 251146), (112, 179390), (140, 143512), (160, 125573), (224, 89695), (280, 71756), (560, 35878), (1120, 17939)]