690921

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{997}}^1$

素因数の和:1021

約数の個数: 24

約数和(自身を含む): 1245504

約数和(自身を除く): 554583

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 997, 2991, 6979, 8973, 10967, 20937, 32901, 62811, 76769, 98703, 230307, 690921]

約数ペア:

[(1, 690921), (3, 230307), (7, 98703), (9, 76769), (11, 62811), (21, 32901), (33, 20937), (63, 10967), (77, 8973), (99, 6979), (231, 2991), (693, 997)]