21739419

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2617}}^1$

素因数の和:2707

約数の個数: 24

約数和(自身を含む): 34306272

約数和(自身を除く): 12566853

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2617, 2769, 7851, 8307, 23553, 34021, 102063, 185807, 306189, 557421, 1672263, 2415491, 7246473, 21739419]

約数ペア:

[(1, 21739419), (3, 7246473), (9, 2415491), (13, 1672263), (39, 557421), (71, 306189), (117, 185807), (213, 102063), (639, 34021), (923, 23553), (2617, 8307), (2769, 7851)]