18694557

素因数分解:

$3^4\times 7^1\times {\mathrm{32971}}^1$

素因数の和:32990

約数の個数: 20

約数和(自身を含む): 31916896

約数和(自身を除く): 13222339

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 32971, 98913, 230797, 296739, 692391, 890217, 2077173, 2670651, 6231519, 18694557]

約数ペア:

[(1, 18694557), (3, 6231519), (7, 2670651), (9, 2077173), (21, 890217), (27, 692391), (63, 296739), (81, 230797), (189, 98913), (567, 32971)]