18424719

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{293}}^1$

素因数の和:456

約数の個数: 32

約数和(自身を含む): 29211840

約数和(自身を除く): 10787121

約数列:

[1, 3, 9, 17, 27, 51, 137, 153, 293, 411, 459, 879, 1233, 2329, 2637, 3699, 4981, 6987, 7911, 14943, 20961, 40141, 44829, 62883, 120423, 134487, 361269, 682397, 1083807, 2047191, 6141573, 18424719]

約数ペア:

[(1, 18424719), (3, 6141573), (9, 2047191), (17, 1083807), (27, 682397), (51, 361269), (137, 134487), (153, 120423), (293, 62883), (411, 44829), (459, 40141), (879, 20961), (1233, 14943), (2329, 7911), (2637, 6987), (3699, 4981)]