21609688

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{142169}}^1$

素因数の和:142194

約数の個数: 16

約数和(自身を含む): 42651000

約数和(自身を除く): 21041312

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 142169, 284338, 568676, 1137352, 2701211, 5402422, 10804844, 21609688]

約数ペア:

[(1, 21609688), (2, 10804844), (4, 5402422), (8, 2701211), (19, 1137352), (38, 568676), (76, 284338), (152, 142169)]