21905368

素因数分解:

$2^3\times {\mathrm{389}}^1\times {\mathrm{7039}}^1$

素因数の和:7434

約数の個数: 16

約数和(自身を含む): 41184000

約数和(自身を除く): 19278632

約数列:

[1, 2, 4, 8, 389, 778, 1556, 3112, 7039, 14078, 28156, 56312, 2738171, 5476342, 10952684, 21905368]

約数ペア:

[(1, 21905368), (2, 10952684), (4, 5476342), (8, 2738171), (389, 56312), (778, 28156), (1556, 14078), (3112, 7039)]