1640399721

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{1277}}^1\times {\mathrm{18617}}^1$

素因数の和:19920

約数の個数: 16

約数和(自身を含む): 2284205184

約数和(自身を除く): 643805463

約数列:

[1, 3, 23, 69, 1277, 3831, 18617, 29371, 55851, 88113, 428191, 1284573, 23773909, 71321727, 546799907, 1640399721]

約数ペア:

[(1, 1640399721), (3, 546799907), (23, 71321727), (69, 23773909), (1277, 1284573), (3831, 428191), (18617, 88113), (29371, 55851)]