19885665

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{77983}}^1$

素因数の和:78008

約数の個数: 16

約数和(自身を含む): 33689088

約数和(自身を除く): 13803423

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 77983, 233949, 389915, 1169745, 1325711, 3977133, 6628555, 19885665]

約数ペア:

[(1, 19885665), (3, 6628555), (5, 3977133), (15, 1325711), (17, 1169745), (51, 389915), (85, 233949), (255, 77983)]