19816069

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 26190080

約数和(自身を除く): 6374011

約数列:

[1, 7, 13, 19, 73, 91, 133, 157, 247, 511, 949, 1099, 1387, 1729, 2041, 2983, 6643, 9709, 11461, 14287, 18031, 20881, 38779, 80227, 126217, 148993, 217759, 271453, 1042951, 1524313, 2830867, 19816069]

約数ペア:

[(1, 19816069), (7, 2830867), (13, 1524313), (19, 1042951), (73, 271453), (91, 217759), (133, 148993), (157, 126217), (247, 80227), (511, 38779), (949, 20881), (1099, 18031), (1387, 14287), (1729, 11461), (2041, 9709), (2983, 6643)]