20792785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{607}}^1$

素因数の和:673

約数の個数: 32

約数和(自身を含む): 29417472

約数和(自身を除く): 8624687

約数列:

[1, 5, 13, 17, 31, 65, 85, 155, 221, 403, 527, 607, 1105, 2015, 2635, 3035, 6851, 7891, 10319, 18817, 34255, 39455, 51595, 94085, 134147, 244621, 319889, 670735, 1223105, 1599445, 4158557, 20792785]

約数ペア:

[(1, 20792785), (5, 4158557), (13, 1599445), (17, 1223105), (31, 670735), (65, 319889), (85, 244621), (155, 134147), (221, 94085), (403, 51595), (527, 39455), (607, 34255), (1105, 18817), (2015, 10319), (2635, 7891), (3035, 6851)]