21171720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{176431}}^1$

素因数の和:176445

約数の個数: 32

約数和(自身を含む): 63515520

約数和(自身を除く): 42343800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 176431, 352862, 529293, 705724, 882155, 1058586, 1411448, 1764310, 2117172, 2646465, 3528620, 4234344, 5292930, 7057240, 10585860, 21171720]

約数ペア:

[(1, 21171720), (2, 10585860), (3, 7057240), (4, 5292930), (5, 4234344), (6, 3528620), (8, 2646465), (10, 2117172), (12, 1764310), (15, 1411448), (20, 1058586), (24, 882155), (30, 705724), (40, 529293), (60, 352862), (120, 176431)]