21208620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2543}}^1$

素因数の和:2694

約数の個数: 48

約数和(自身を含む): 59834880

約数和(自身を除く): 38626260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 139, 278, 417, 556, 695, 834, 1390, 1668, 2085, 2543, 2780, 4170, 5086, 7629, 8340, 10172, 12715, 15258, 25430, 30516, 38145, 50860, 76290, 152580, 353477, 706954, 1060431, 1413908, 1767385, 2120862, 3534770, 4241724, 5302155, 7069540, 10604310, 21208620]

約数ペア:

[(1, 21208620), (2, 10604310), (3, 7069540), (4, 5302155), (5, 4241724), (6, 3534770), (10, 2120862), (12, 1767385), (15, 1413908), (20, 1060431), (30, 706954), (60, 353477), (139, 152580), (278, 76290), (417, 50860), (556, 38145), (695, 30516), (834, 25430), (1390, 15258), (1668, 12715), (2085, 10172), (2543, 8340), (2780, 7629), (4170, 5086)]