21759231

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{4259}}^1$

素因数の和:4406

約数の個数: 16

約数和(自身を含む): 31489920

約数和(自身を除く): 9730689

約数列:

[1, 3, 13, 39, 131, 393, 1703, 4259, 5109, 12777, 55367, 166101, 557929, 1673787, 7253077, 21759231]

約数ペア:

[(1, 21759231), (3, 7253077), (13, 1673787), (39, 557929), (131, 166101), (393, 55367), (1703, 12777), (4259, 5109)]