19318887

素因数分解:

$3^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{617}}^1$

素因数の和:708

約数の個数: 36

約数和(自身を含む): 32971536

約数和(自身を除く): 13652649

約数列:

[1, 3, 7, 9, 21, 49, 63, 71, 147, 213, 441, 497, 617, 639, 1491, 1851, 3479, 4319, 4473, 5553, 10437, 12957, 30233, 31311, 38871, 43807, 90699, 131421, 272097, 306649, 394263, 919947, 2146543, 2759841, 6439629, 19318887]

約数ペア:

[(1, 19318887), (3, 6439629), (7, 2759841), (9, 2146543), (21, 919947), (49, 394263), (63, 306649), (71, 272097), (147, 131421), (213, 90699), (441, 43807), (497, 38871), (617, 31311), (639, 30233), (1491, 12957), (1851, 10437), (3479, 5553), (4319, 4473)]