20340639

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{617}}^1$

素因数の和:677

約数の個数: 40

約数和(自身を含む): 34098768

約数和(自身を除く): 13758129

約数列:

[1, 3, 9, 11, 27, 33, 37, 81, 99, 111, 297, 333, 407, 617, 891, 999, 1221, 1851, 2997, 3663, 5553, 6787, 10989, 16659, 20361, 22829, 32967, 49977, 61083, 68487, 183249, 205461, 251119, 549747, 616383, 753357, 1849149, 2260071, 6780213, 20340639]

約数ペア:

[(1, 20340639), (3, 6780213), (9, 2260071), (11, 1849149), (27, 753357), (33, 616383), (37, 549747), (81, 251119), (99, 205461), (111, 183249), (297, 68487), (333, 61083), (407, 49977), (617, 32967), (891, 22829), (999, 20361), (1221, 16659), (1851, 10989), (2997, 6787), (3663, 5553)]