21064251

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{1021}}^1$

素因数の和:1083

約数の個数: 24

約数和(自身を含む): 31649296

約数和(自身を除く): 10585045

約数列:

[1, 3, 13, 23, 39, 69, 299, 529, 897, 1021, 1587, 3063, 6877, 13273, 20631, 23483, 39819, 70449, 305279, 540109, 915837, 1620327, 7021417, 21064251]

約数ペア:

[(1, 21064251), (3, 7021417), (13, 1620327), (23, 915837), (39, 540109), (69, 305279), (299, 70449), (529, 39819), (897, 23483), (1021, 20631), (1587, 13273), (3063, 6877)]