19886828

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 39137280

約数和(自身を除く): 19250452

約数列:

[1, 2, 4, 13, 26, 47, 52, 79, 94, 103, 158, 188, 206, 316, 412, 611, 1027, 1222, 1339, 2054, 2444, 2678, 3713, 4108, 4841, 5356, 7426, 8137, 9682, 14852, 16274, 19364, 32548, 48269, 62933, 96538, 105781, 125866, 193076, 211562, 251732, 382439, 423124, 764878, 1529756, 4971707, 9943414, 19886828]

約数ペア:

[(1, 19886828), (2, 9943414), (4, 4971707), (13, 1529756), (26, 764878), (47, 423124), (52, 382439), (79, 251732), (94, 211562), (103, 193076), (158, 125866), (188, 105781), (206, 96538), (316, 62933), (412, 48269), (611, 32548), (1027, 19364), (1222, 16274), (1339, 14852), (2054, 9682), (2444, 8137), (2678, 7426), (3713, 5356), (4108, 4841)]