20782244

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 43671936

約数和(自身を除く): 22889692

約数列:

[1, 2, 4, 7, 14, 28, 41, 43, 82, 86, 164, 172, 287, 301, 421, 574, 602, 842, 1148, 1204, 1684, 1763, 2947, 3526, 5894, 7052, 11788, 12341, 17261, 18103, 24682, 34522, 36206, 49364, 69044, 72412, 120827, 126721, 241654, 253442, 483308, 506884, 742223, 1484446, 2968892, 5195561, 10391122, 20782244]

約数ペア:

[(1, 20782244), (2, 10391122), (4, 5195561), (7, 2968892), (14, 1484446), (28, 742223), (41, 506884), (43, 483308), (82, 253442), (86, 241654), (164, 126721), (172, 120827), (287, 72412), (301, 69044), (421, 49364), (574, 36206), (602, 34522), (842, 24682), (1148, 18103), (1204, 17261), (1684, 12341), (1763, 11788), (2947, 7052), (3526, 5894)]