19729899

素因数分解:

$3^5\times 7^2\times {\mathrm{1657}}^1$

素因数の和:1686

約数の個数: 36

約数和(自身を含む): 34400184

約数和(自身を除く): 14670285

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 1323, 1657, 1701, 3969, 4971, 11599, 11907, 14913, 34797, 44739, 81193, 104391, 134217, 243579, 313173, 402651, 730737, 939519, 2192211, 2818557, 6576633, 19729899]

約数ペア:

[(1, 19729899), (3, 6576633), (7, 2818557), (9, 2192211), (21, 939519), (27, 730737), (49, 402651), (63, 313173), (81, 243579), (147, 134217), (189, 104391), (243, 81193), (441, 44739), (567, 34797), (1323, 14913), (1657, 11907), (1701, 11599), (3969, 4971)]