19478992

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1319}}^1$

素因数の和:1411

約数の個数: 40

約数和(自身を含む): 41247360

約数和(自身を除く): 21768368

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 142, 208, 284, 568, 923, 1136, 1319, 1846, 2638, 3692, 5276, 7384, 10552, 14768, 17147, 21104, 34294, 68588, 93649, 137176, 187298, 274352, 374596, 749192, 1217437, 1498384, 2434874, 4869748, 9739496, 19478992]

約数ペア:

[(1, 19478992), (2, 9739496), (4, 4869748), (8, 2434874), (13, 1498384), (16, 1217437), (26, 749192), (52, 374596), (71, 274352), (104, 187298), (142, 137176), (208, 93649), (284, 68588), (568, 34294), (923, 21104), (1136, 17147), (1319, 14768), (1846, 10552), (2638, 7384), (3692, 5276)]