21273820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{853}}^1$

素因数の和:934

約数の個数: 48

約数和(自身を含む): 47345760

約数和(自身を除く): 26071940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 853, 860, 1247, 1706, 2494, 3412, 4265, 4988, 6235, 8530, 12470, 17060, 24737, 24940, 36679, 49474, 73358, 98948, 123685, 146716, 183395, 247370, 366790, 494740, 733580, 1063691, 2127382, 4254764, 5318455, 10636910, 21273820]

約数ペア:

[(1, 21273820), (2, 10636910), (4, 5318455), (5, 4254764), (10, 2127382), (20, 1063691), (29, 733580), (43, 494740), (58, 366790), (86, 247370), (116, 183395), (145, 146716), (172, 123685), (215, 98948), (290, 73358), (430, 49474), (580, 36679), (853, 24940), (860, 24737), (1247, 17060), (1706, 12470), (2494, 8530), (3412, 6235), (4265, 4988)]