21018894

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{269473}}^1$

素因数の和:269491

約数の個数: 16

約数和(自身を含む): 45271632

約数和(自身を除く): 24252738

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 269473, 538946, 808419, 1616838, 3503149, 7006298, 10509447, 21018894]

約数ペア:

[(1, 21018894), (2, 10509447), (3, 7006298), (6, 3503149), (13, 1616838), (26, 808419), (39, 538946), (78, 269473)]