21071570405

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{647}}^1\times {\mathrm{1637}}^1$

素因数の和:2485

約数の個数: 32

約数和(自身を含む): 26595039744

約数和(自身を除く): 5523469339

約数列:

[1, 5, 23, 115, 173, 647, 865, 1637, 3235, 3979, 8185, 14881, 19895, 37651, 74405, 111931, 188255, 283201, 559655, 1059139, 1416005, 2574413, 5295695, 6513623, 12872065, 24360197, 32568115, 121800985, 183231047, 916155235, 4214314081, 21071570405]

約数ペア:

[(1, 21071570405), (5, 4214314081), (23, 916155235), (115, 183231047), (173, 121800985), (647, 32568115), (865, 24360197), (1637, 12872065), (3235, 6513623), (3979, 5295695), (8185, 2574413), (14881, 1416005), (19895, 1059139), (37651, 559655), (74405, 283201), (111931, 188255)]