21000918136

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{566857}}^1$

素因数の和:567295

約数の個数: 32

約数和(自身を含む): 43058533680

約数和(自身を除く): 22057615544

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 421, 842, 1684, 3368, 4631, 9262, 18524, 37048, 566857, 1133714, 2267428, 4534856, 6235427, 12470854, 24941708, 49883416, 238646797, 477293594, 954587188, 1909174376, 2625114767, 5250229534, 10500459068, 21000918136]

約数ペア:

[(1, 21000918136), (2, 10500459068), (4, 5250229534), (8, 2625114767), (11, 1909174376), (22, 954587188), (44, 477293594), (88, 238646797), (421, 49883416), (842, 24941708), (1684, 12470854), (3368, 6235427), (4631, 4534856), (9262, 2267428), (18524, 1133714), (37048, 566857)]