2019978405

素因数分解:

$3^4\times 5^1\times {\mathrm{887}}^1\times {\mathrm{5623}}^1$

素因数の和:6527

約数の個数: 40

約数和(自身を含む): 3625725312

約数和(自身を除く): 1605746907

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 887, 2661, 4435, 5623, 7983, 13305, 16869, 23949, 28115, 39915, 50607, 71847, 84345, 119745, 151821, 253035, 359235, 455463, 759105, 2277315, 4987601, 14962803, 24938005, 44888409, 74814015, 134665227, 224442045, 403995681, 673326135, 2019978405]

約数ペア:

[(1, 2019978405), (3, 673326135), (5, 403995681), (9, 224442045), (15, 134665227), (27, 74814015), (45, 44888409), (81, 24938005), (135, 14962803), (405, 4987601), (887, 2277315), (2661, 759105), (4435, 455463), (5623, 359235), (7983, 253035), (13305, 151821), (16869, 119745), (23949, 84345), (28115, 71847), (39915, 50607)]