21187283

素因数分解:

${\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{313}}^1$

素因数の和:494

約数の個数: 16

約数和(自身を含む): 23632896

約数和(自身を除く): 2445613

約数列:

[1, 13, 41, 127, 313, 533, 1651, 4069, 5207, 12833, 39751, 67691, 166829, 516763, 1629791, 21187283]

約数ペア:

[(1, 21187283), (13, 1629791), (41, 516763), (127, 166829), (313, 67691), (533, 39751), (1651, 12833), (4069, 5207)]