21286384

素因数分解:

$2^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1429}}^1$

素因数の和:1470

約数の個数: 60

約数和(自身を含む): 50536200

約数和(自身を除く): 29249816

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 49, 56, 76, 98, 112, 133, 152, 196, 266, 304, 392, 532, 784, 931, 1064, 1429, 1862, 2128, 2858, 3724, 5716, 7448, 10003, 11432, 14896, 20006, 22864, 27151, 40012, 54302, 70021, 80024, 108604, 140042, 160048, 190057, 217208, 280084, 380114, 434416, 560168, 760228, 1120336, 1330399, 1520456, 2660798, 3040912, 5321596, 10643192, 21286384]

約数ペア:

[(1, 21286384), (2, 10643192), (4, 5321596), (7, 3040912), (8, 2660798), (14, 1520456), (16, 1330399), (19, 1120336), (28, 760228), (38, 560168), (49, 434416), (56, 380114), (76, 280084), (98, 217208), (112, 190057), (133, 160048), (152, 140042), (196, 108604), (266, 80024), (304, 70021), (392, 54302), (532, 40012), (784, 27151), (931, 22864), (1064, 20006), (1429, 14896), (1862, 11432), (2128, 10003), (2858, 7448), (3724, 5716)]