20986110

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{929}}^1$

素因数の和:1193

約数の個数: 48

約数和(自身を含む): 54840240

約数和(自身を除く): 33854130

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 251, 502, 753, 929, 1255, 1506, 1858, 2259, 2510, 2787, 3765, 4518, 4645, 5574, 7530, 8361, 9290, 11295, 13935, 16722, 22590, 27870, 41805, 83610, 233179, 466358, 699537, 1165895, 1399074, 2098611, 2331790, 3497685, 4197222, 6995370, 10493055, 20986110]

約数ペア:

[(1, 20986110), (2, 10493055), (3, 6995370), (5, 4197222), (6, 3497685), (9, 2331790), (10, 2098611), (15, 1399074), (18, 1165895), (30, 699537), (45, 466358), (90, 233179), (251, 83610), (502, 41805), (753, 27870), (929, 22590), (1255, 16722), (1506, 13935), (1858, 11295), (2259, 9290), (2510, 8361), (2787, 7530), (3765, 5574), (4518, 4645)]