20385784

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3119}}^1$

素因数の和:3187

約数の個数: 32

約数和(自身を含む): 41184000

約数和(自身を除く): 20798216

約数列:

[1, 2, 4, 8, 19, 38, 43, 76, 86, 152, 172, 344, 817, 1634, 3119, 3268, 6238, 6536, 12476, 24952, 59261, 118522, 134117, 237044, 268234, 474088, 536468, 1072936, 2548223, 5096446, 10192892, 20385784]

約数ペア:

[(1, 20385784), (2, 10192892), (4, 5096446), (8, 2548223), (19, 1072936), (38, 536468), (43, 474088), (76, 268234), (86, 237044), (152, 134117), (172, 118522), (344, 59261), (817, 24952), (1634, 12476), (3119, 6536), (3268, 6238)]