18721701

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{607}}^1$

素因数の和:785

約数の個数: 24

約数和(自身を含む): 28454400

約数和(自身を除く): 9732699

約数列:

[1, 3, 9, 23, 69, 149, 207, 447, 607, 1341, 1821, 3427, 5463, 10281, 13961, 30843, 41883, 90443, 125649, 271329, 813987, 2080189, 6240567, 18721701]

約数ペア:

[(1, 18721701), (3, 6240567), (9, 2080189), (23, 813987), (69, 271329), (149, 125649), (207, 90443), (447, 41883), (607, 30843), (1341, 13961), (1821, 10281), (3427, 5463)]