20698645

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 28377216

約数和(自身を除く): 7678571

約数列:

[1, 5, 11, 41, 55, 67, 137, 205, 335, 451, 685, 737, 1507, 2255, 2747, 3685, 5617, 7535, 9179, 13735, 28085, 30217, 45895, 61787, 100969, 151085, 308935, 376339, 504845, 1881695, 4139729, 20698645]

約数ペア:

[(1, 20698645), (5, 4139729), (11, 1881695), (41, 504845), (55, 376339), (67, 308935), (137, 151085), (205, 100969), (335, 61787), (451, 45895), (685, 30217), (737, 28085), (1507, 13735), (2255, 9179), (2747, 7535), (3685, 5617)]