20409820557

素因数分解:

$3^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{4358279}}^1$

素因数の和:4358512

約数の個数: 16

約数和(自身を含む): 31240151040

約数和(自身を除く): 10830330483

約数列:

[1, 3, 7, 21, 223, 669, 1561, 4683, 4358279, 13074837, 30507953, 91523859, 971896217, 2915688651, 6803273519, 20409820557]

約数ペア:

[(1, 20409820557), (3, 6803273519), (7, 2915688651), (21, 971896217), (223, 91523859), (669, 30507953), (1561, 13074837), (4683, 4358279)]