21990488

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{599}}^1$

素因数の和:971

約数の個数: 32

約数和(自身を含む): 44604000

約数和(自身を除く): 22613512

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 353, 599, 706, 1198, 1412, 2396, 2824, 4589, 4792, 7787, 9178, 15574, 18356, 31148, 36712, 62296, 211447, 422894, 845788, 1691576, 2748811, 5497622, 10995244, 21990488]

約数ペア:

[(1, 21990488), (2, 10995244), (4, 5497622), (8, 2748811), (13, 1691576), (26, 845788), (52, 422894), (104, 211447), (353, 62296), (599, 36712), (706, 31148), (1198, 18356), (1412, 15574), (2396, 9178), (2824, 7787), (4589, 4792)]