21085220273

素因数分解:

${\mathrm{13}}^2\times {\mathrm{313}}^1\times {\mathrm{398609}}^1$

素因数の和:398948

約数の個数: 12

約数和(自身を含む): 22904927820

約数和(自身を除く): 1819707547

約数列:

[1, 13, 169, 313, 4069, 52897, 398609, 5181917, 67364921, 124764617, 1621940021, 21085220273]

約数ペア:

[(1, 21085220273), (13, 1621940021), (169, 124764617), (313, 67364921), (4069, 5181917), (52897, 398609)]