21971055

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{86161}}^1$

素因数の和:86186

約数の個数: 16

約数和(自身を含む): 37221984

約数和(自身を除く): 15250929

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 86161, 258483, 430805, 1292415, 1464737, 4394211, 7323685, 21971055]

約数ペア:

[(1, 21971055), (3, 7323685), (5, 4394211), (15, 1464737), (17, 1292415), (51, 430805), (85, 258483), (255, 86161)]