21000971706

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{647}}^1\times {\mathrm{37831}}^1$

素因数の和:38507

約数の個数: 64

約数和(自身を含む): 49422514176

約数和(自身を除く): 28421542470

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 143, 286, 429, 647, 858, 1294, 1941, 3882, 7117, 8411, 14234, 16822, 21351, 25233, 37831, 42702, 50466, 75662, 92521, 113493, 185042, 226986, 277563, 416141, 491803, 555126, 832282, 983606, 1248423, 1475409, 2496846, 2950818, 5409833, 10819666, 16229499, 24476657, 32458998, 48953314, 73429971, 146859942, 269243227, 318196541, 538486454, 636393082, 807729681, 954589623, 1615459362, 1909179246, 3500161951, 7000323902, 10500485853, 21000971706]

約数ペア:

[(1, 21000971706), (2, 10500485853), (3, 7000323902), (6, 3500161951), (11, 1909179246), (13, 1615459362), (22, 954589623), (26, 807729681), (33, 636393082), (39, 538486454), (66, 318196541), (78, 269243227), (143, 146859942), (286, 73429971), (429, 48953314), (647, 32458998), (858, 24476657), (1294, 16229499), (1941, 10819666), (3882, 5409833), (7117, 2950818), (8411, 2496846), (14234, 1475409), (16822, 1248423), (21351, 983606), (25233, 832282), (37831, 555126), (42702, 491803), (50466, 416141), (75662, 277563), (92521, 226986), (113493, 185042)]