20610700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{457}}^1$

素因数の和:523

約数の個数: 72

約数和(自身を含む): 50090544

約数和(自身を除く): 29479844

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 41, 44, 50, 55, 82, 100, 110, 164, 205, 220, 275, 410, 451, 457, 550, 820, 902, 914, 1025, 1100, 1804, 1828, 2050, 2255, 2285, 4100, 4510, 4570, 5027, 9020, 9140, 10054, 11275, 11425, 18737, 20108, 22550, 22850, 25135, 37474, 45100, 45700, 50270, 74948, 93685, 100540, 125675, 187370, 206107, 251350, 374740, 412214, 468425, 502700, 824428, 936850, 1030535, 1873700, 2061070, 4122140, 5152675, 10305350, 20610700]

約数ペア:

[(1, 20610700), (2, 10305350), (4, 5152675), (5, 4122140), (10, 2061070), (11, 1873700), (20, 1030535), (22, 936850), (25, 824428), (41, 502700), (44, 468425), (50, 412214), (55, 374740), (82, 251350), (100, 206107), (110, 187370), (164, 125675), (205, 100540), (220, 93685), (275, 74948), (410, 50270), (451, 45700), (457, 45100), (550, 37474), (820, 25135), (902, 22850), (914, 22550), (1025, 20108), (1100, 18737), (1804, 11425), (1828, 11275), (2050, 10054), (2255, 9140), (2285, 9020), (4100, 5027), (4510, 4570)]