20937609

素因数分解:

$3^6\times 7^1\times {\mathrm{11}}^1\times {\mathrm{373}}^1$

素因数の和:409

約数の個数: 56

約数和(自身を含む): 39243072

約数和(自身を除く): 18305463

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 189, 231, 243, 297, 373, 567, 693, 729, 891, 1119, 1701, 2079, 2611, 2673, 3357, 4103, 5103, 6237, 7833, 8019, 10071, 12309, 18711, 23499, 28721, 30213, 36927, 56133, 70497, 86163, 90639, 110781, 211491, 258489, 271917, 332343, 634473, 775467, 997029, 1903419, 2326401, 2991087, 6979203, 20937609]

約数ペア:

[(1, 20937609), (3, 6979203), (7, 2991087), (9, 2326401), (11, 1903419), (21, 997029), (27, 775467), (33, 634473), (63, 332343), (77, 271917), (81, 258489), (99, 211491), (189, 110781), (231, 90639), (243, 86163), (297, 70497), (373, 56133), (567, 36927), (693, 30213), (729, 28721), (891, 23499), (1119, 18711), (1701, 12309), (2079, 10071), (2611, 8019), (2673, 7833), (3357, 6237), (4103, 5103)]