21681374

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^2$

素因数の和:153

約数の個数: 48

約数和(自身を含む): 40071024

約数和(自身を除く): 18389650

約数列:

[1, 2, 11, 13, 22, 26, 41, 43, 82, 86, 143, 286, 451, 473, 533, 559, 902, 946, 1066, 1118, 1763, 1849, 3526, 3698, 5863, 6149, 11726, 12298, 19393, 20339, 22919, 24037, 38786, 40678, 45838, 48074, 75809, 151618, 252109, 264407, 504218, 528814, 833899, 985517, 1667798, 1971034, 10840687, 21681374]

約数ペア:

[(1, 21681374), (2, 10840687), (11, 1971034), (13, 1667798), (22, 985517), (26, 833899), (41, 528814), (43, 504218), (82, 264407), (86, 252109), (143, 151618), (286, 75809), (451, 48074), (473, 45838), (533, 40678), (559, 38786), (902, 24037), (946, 22919), (1066, 20339), (1118, 19393), (1763, 12298), (1849, 11726), (3526, 6149), (3698, 5863)]