21508860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2579}}^1$

素因数の和:2730

約数の個数: 48

約数和(自身を含む): 60681600

約数和(自身を除く): 39172740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 139, 278, 417, 556, 695, 834, 1390, 1668, 2085, 2579, 2780, 4170, 5158, 7737, 8340, 10316, 12895, 15474, 25790, 30948, 38685, 51580, 77370, 154740, 358481, 716962, 1075443, 1433924, 1792405, 2150886, 3584810, 4301772, 5377215, 7169620, 10754430, 21508860]

約数ペア:

[(1, 21508860), (2, 10754430), (3, 7169620), (4, 5377215), (5, 4301772), (6, 3584810), (10, 2150886), (12, 1792405), (15, 1433924), (20, 1075443), (30, 716962), (60, 358481), (139, 154740), (278, 77370), (417, 51580), (556, 38685), (695, 30948), (834, 25790), (1390, 15474), (1668, 12895), (2085, 10316), (2579, 8340), (2780, 7737), (4170, 5158)]