21193816

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{19919}}^1$

素因数の和:19951

約数の個数: 32

約数和(自身を含む): 47808000

約数和(自身を除く): 26614184

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 19919, 39838, 79676, 139433, 159352, 278866, 378461, 557732, 756922, 1115464, 1513844, 2649227, 3027688, 5298454, 10596908, 21193816]

約数ペア:

[(1, 21193816), (2, 10596908), (4, 5298454), (7, 3027688), (8, 2649227), (14, 1513844), (19, 1115464), (28, 756922), (38, 557732), (56, 378461), (76, 278866), (133, 159352), (152, 139433), (266, 79676), (532, 39838), (1064, 19919)]