21118586601

素因数分解:

$3^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{997}}^1\times {\mathrm{1559}}^1$

素因数の和:3213

約数の個数: 32

約数和(自身を含む): 32283463680

約数和(自身を除く): 11164877079

約数列:

[1, 3, 7, 21, 647, 997, 1559, 1941, 2991, 4529, 4677, 6979, 10913, 13587, 20937, 32739, 645059, 1008673, 1554323, 1935177, 3026019, 4515413, 4662969, 7060711, 10880261, 13546239, 21182133, 32640783, 1005646981, 3016940943, 7039528867, 21118586601]

約数ペア:

[(1, 21118586601), (3, 7039528867), (7, 3016940943), (21, 1005646981), (647, 32640783), (997, 21182133), (1559, 13546239), (1941, 10880261), (2991, 7060711), (4529, 4662969), (4677, 4515413), (6979, 3026019), (10913, 1935177), (13587, 1554323), (20937, 1008673), (32739, 645059)]