21750417

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61967}}^1$

素因数の和:61989

約数の個数: 16

約数和(自身を含む): 34702080

約数和(自身を除く): 12951663

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61967, 185901, 557703, 805571, 1673109, 2416713, 7250139, 21750417]

約数ペア:

[(1, 21750417), (3, 7250139), (9, 2416713), (13, 1673109), (27, 805571), (39, 557703), (117, 185901), (351, 61967)]