21959800

素因数分解:

$2^3\times 5^2\times {\mathrm{59}}^1\times {\mathrm{1861}}^1$

素因数の和:1936

約数の個数: 48

約数和(自身を含む): 51949800

約数和(自身を除く): 29990000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 59, 100, 118, 200, 236, 295, 472, 590, 1180, 1475, 1861, 2360, 2950, 3722, 5900, 7444, 9305, 11800, 14888, 18610, 37220, 46525, 74440, 93050, 109799, 186100, 219598, 372200, 439196, 548995, 878392, 1097990, 2195980, 2744975, 4391960, 5489950, 10979900, 21959800]

約数ペア:

[(1, 21959800), (2, 10979900), (4, 5489950), (5, 4391960), (8, 2744975), (10, 2195980), (20, 1097990), (25, 878392), (40, 548995), (50, 439196), (59, 372200), (100, 219598), (118, 186100), (200, 109799), (236, 93050), (295, 74440), (472, 46525), (590, 37220), (1180, 18610), (1475, 14888), (1861, 11800), (2360, 9305), (2950, 7444), (3722, 5900)]