19905556

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{12227}}^1$

素因数の和:12279

約数の個数: 24

約数和(自身を含む): 39031776

約数和(自身を除く): 19126220

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628, 12227, 24454, 48908, 134497, 268994, 452399, 537988, 904798, 1809596, 4976389, 9952778, 19905556]

約数ペア:

[(1, 19905556), (2, 9952778), (4, 4976389), (11, 1809596), (22, 904798), (37, 537988), (44, 452399), (74, 268994), (148, 134497), (407, 48908), (814, 24454), (1628, 12227)]