19697559

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2851}}^1$

素因数の和:2915

約数の個数: 24

約数和(自身を含む): 31212288

約数和(自身を除く): 11514729

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 2851, 6909, 8553, 19957, 59871, 133997, 139699, 401991, 419097, 937979, 2813937, 6565853, 19697559]

約数ペア:

[(1, 19697559), (3, 6565853), (7, 2813937), (21, 937979), (47, 419097), (49, 401991), (141, 139699), (147, 133997), (329, 59871), (987, 19957), (2303, 8553), (2851, 6909)]