20525585

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1\times {\mathrm{389}}^1$

素因数の和:628

約数の個数: 16

約数和(自身を含む): 25243920

約数和(自身を除く): 4718335

約数列:

[1, 5, 61, 173, 305, 389, 865, 1945, 10553, 23729, 52765, 67297, 118645, 336485, 4105117, 20525585]

約数ペア:

[(1, 20525585), (5, 4105117), (61, 336485), (173, 118645), (305, 67297), (389, 52765), (865, 23729), (1945, 10553)]