18872919

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{17923}}^1$

素因数の和:17948

約数の個数: 20

約数和(自身を含む): 30363256

約数和(自身を除く): 11490337

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 17923, 53769, 161307, 232999, 483921, 698997, 1451763, 2096991, 6290973, 18872919]

約数ペア:

[(1, 18872919), (3, 6290973), (9, 2096991), (13, 1451763), (27, 698997), (39, 483921), (81, 232999), (117, 161307), (351, 53769), (1053, 17923)]