21220930

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2903}}^1$

素因数の和:2970

約数の個数: 32

約数和(自身を含む): 41399424

約数和(自身を除く): 20178494

約数列:

[1, 2, 5, 10, 17, 34, 43, 85, 86, 170, 215, 430, 731, 1462, 2903, 3655, 5806, 7310, 14515, 29030, 49351, 98702, 124829, 246755, 249658, 493510, 624145, 1248290, 2122093, 4244186, 10610465, 21220930]

約数ペア:

[(1, 21220930), (2, 10610465), (5, 4244186), (10, 2122093), (17, 1248290), (34, 624145), (43, 493510), (85, 249658), (86, 246755), (170, 124829), (215, 98702), (430, 49351), (731, 29030), (1462, 14515), (2903, 7310), (3655, 5806)]