1640331

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1$

素因数の和:293

約数の個数: 40

約数和(自身を含む): 3066624

約数和(自身を除く): 1426293

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 189, 231, 263, 297, 567, 693, 789, 891, 1841, 2079, 2367, 2893, 5523, 6237, 7101, 8679, 16569, 20251, 21303, 26037, 49707, 60753, 78111, 149121, 182259, 234333, 546777, 1640331]

約数ペア:

[(1, 1640331), (3, 546777), (7, 234333), (9, 182259), (11, 149121), (21, 78111), (27, 60753), (33, 49707), (63, 26037), (77, 21303), (81, 20251), (99, 16569), (189, 8679), (231, 7101), (263, 6237), (297, 5523), (567, 2893), (693, 2367), (789, 2079), (891, 1841)]