18742708

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{211}}^1\times {\mathrm{419}}^1$

素因数の和:687

約数の個数: 24

約数和(自身を含む): 33657120

約数和(自身を除く): 14914412

約数列:

[1, 2, 4, 53, 106, 211, 212, 419, 422, 838, 844, 1676, 11183, 22207, 22366, 44414, 44732, 88409, 88828, 176818, 353636, 4685677, 9371354, 18742708]

約数ペア:

[(1, 18742708), (2, 9371354), (4, 4685677), (53, 353636), (106, 176818), (211, 88828), (212, 88409), (419, 44732), (422, 44414), (838, 22366), (844, 22207), (1676, 11183)]