21348418

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{1289}}^1$

素因数の和:1331

約数の個数: 36

約数和(自身を含む): 40367970

約数和(自身を除く): 19019552

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 169, 182, 338, 637, 1183, 1274, 1289, 2366, 2578, 8281, 9023, 16562, 16757, 18046, 33514, 63161, 117299, 126322, 217841, 234598, 435682, 821093, 1524887, 1642186, 3049774, 10674209, 21348418]

約数ペア:

[(1, 21348418), (2, 10674209), (7, 3049774), (13, 1642186), (14, 1524887), (26, 821093), (49, 435682), (91, 234598), (98, 217841), (169, 126322), (182, 117299), (338, 63161), (637, 33514), (1183, 18046), (1274, 16757), (1289, 16562), (2366, 9023), (2578, 8281)]