21041994

素因数分解:

$2^1\times 3^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 25406646

約数列:

[1, 2, 3, 6, 29, 31, 47, 58, 62, 83, 87, 93, 94, 141, 166, 174, 186, 249, 282, 498, 899, 1363, 1457, 1798, 2407, 2573, 2697, 2726, 2914, 3901, 4089, 4371, 4814, 5146, 5394, 7221, 7719, 7802, 8178, 8742, 11703, 14442, 15438, 23406, 42253, 74617, 84506, 113129, 120931, 126759, 149234, 223851, 226258, 241862, 253518, 339387, 362793, 447702, 678774, 725586, 3506999, 7013998, 10520997, 21041994]

約数ペア:

[(1, 21041994), (2, 10520997), (3, 7013998), (6, 3506999), (29, 725586), (31, 678774), (47, 447702), (58, 362793), (62, 339387), (83, 253518), (87, 241862), (93, 226258), (94, 223851), (141, 149234), (166, 126759), (174, 120931), (186, 113129), (249, 84506), (282, 74617), (498, 42253), (899, 23406), (1363, 15438), (1457, 14442), (1798, 11703), (2407, 8742), (2573, 8178), (2697, 7802), (2726, 7719), (2914, 7221), (3901, 5394), (4089, 5146), (4371, 4814)]