21273290

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^3\times {\mathrm{433}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 40778640

約数和(自身を除く): 19505350

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 289, 433, 578, 866, 1445, 2165, 2890, 4330, 4913, 7361, 9826, 14722, 24565, 36805, 49130, 73610, 125137, 250274, 625685, 1251370, 2127329, 4254658, 10636645, 21273290]

約数ペア:

[(1, 21273290), (2, 10636645), (5, 4254658), (10, 2127329), (17, 1251370), (34, 625685), (85, 250274), (170, 125137), (289, 73610), (433, 49130), (578, 36805), (866, 24565), (1445, 14722), (2165, 9826), (2890, 7361), (4330, 4913)]