21153878

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{83}}^1\times {\mathrm{353}}^1$

素因数の和:476

約数の個数: 24

約数和(自身を含む): 33988248

約数和(自身を除く): 12834370

約数列:

[1, 2, 19, 38, 83, 166, 353, 361, 706, 722, 1577, 3154, 6707, 13414, 29299, 29963, 58598, 59926, 127433, 254866, 556681, 1113362, 10576939, 21153878]

約数ペア:

[(1, 21153878), (2, 10576939), (19, 1113362), (38, 556681), (83, 254866), (166, 127433), (353, 59926), (361, 58598), (706, 29963), (722, 29299), (1577, 13414), (3154, 6707)]