19807449985

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{661}}^1\times {\mathrm{709}}^1$

素因数の和:1561

約数の個数: 32

約数和(自身を含む): 24365836800

約数和(自身を除く): 4558386815

約数列:

[1, 5, 79, 107, 395, 535, 661, 709, 3305, 3545, 8453, 42265, 52219, 56011, 70727, 75863, 261095, 280055, 353635, 379315, 468649, 2343245, 5587433, 5993177, 27937165, 29965885, 37023271, 50145443, 185116355, 250727215, 3961489997, 19807449985]

約数ペア:

[(1, 19807449985), (5, 3961489997), (79, 250727215), (107, 185116355), (395, 50145443), (535, 37023271), (661, 29965885), (709, 27937165), (3305, 5993177), (3545, 5587433), (8453, 2343245), (42265, 468649), (52219, 379315), (56011, 353635), (70727, 280055), (75863, 261095)]