20873440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18637}}^1$

素因数の和:18659

約数の個数: 48

約数和(自身を含む): 56361312

約数和(自身を除く): 35487872

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, 18637, 37274, 74548, 93185, 130459, 149096, 186370, 260918, 298192, 372740, 521836, 596384, 652295, 745480, 1043672, 1304590, 1490960, 2087344, 2609180, 2981920, 4174688, 5218360, 10436720, 20873440]

約数ペア:

[(1, 20873440), (2, 10436720), (4, 5218360), (5, 4174688), (7, 2981920), (8, 2609180), (10, 2087344), (14, 1490960), (16, 1304590), (20, 1043672), (28, 745480), (32, 652295), (35, 596384), (40, 521836), (56, 372740), (70, 298192), (80, 260918), (112, 186370), (140, 149096), (160, 130459), (224, 93185), (280, 74548), (560, 37274), (1120, 18637)]