21801766

素因数分解:

$2^1\times 7^3\times {\mathrm{61}}^1\times {\mathrm{521}}^1$

素因数の和:605

約数の個数: 32

約数和(自身を含む): 38836800

約数和(自身を除く): 17035034

約数列:

[1, 2, 7, 14, 49, 61, 98, 122, 343, 427, 521, 686, 854, 1042, 2989, 3647, 5978, 7294, 20923, 25529, 31781, 41846, 51058, 63562, 178703, 222467, 357406, 444934, 1557269, 3114538, 10900883, 21801766]

約数ペア:

[(1, 21801766), (2, 10900883), (7, 3114538), (14, 1557269), (49, 444934), (61, 357406), (98, 222467), (122, 178703), (343, 63562), (427, 51058), (521, 41846), (686, 31781), (854, 25529), (1042, 20923), (2989, 7294), (3647, 5978)]