20420372

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{263}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 42577920

約数和(自身を除く): 22157548

約数列:

[1, 2, 4, 7, 14, 28, 47, 59, 94, 118, 188, 236, 263, 329, 413, 526, 658, 826, 1052, 1316, 1652, 1841, 2773, 3682, 5546, 7364, 11092, 12361, 15517, 19411, 24722, 31034, 38822, 49444, 62068, 77644, 86527, 108619, 173054, 217238, 346108, 434476, 729299, 1458598, 2917196, 5105093, 10210186, 20420372]

約数ペア:

[(1, 20420372), (2, 10210186), (4, 5105093), (7, 2917196), (14, 1458598), (28, 729299), (47, 434476), (59, 346108), (94, 217238), (118, 173054), (188, 108619), (236, 86527), (263, 77644), (329, 62068), (413, 49444), (526, 38822), (658, 31034), (826, 24722), (1052, 19411), (1316, 15517), (1652, 12361), (1841, 11092), (2773, 7364), (3682, 5546)]