20968381

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{4261}}^1$

素因数の和:4324

約数の個数: 16

約数和(自身を含む): 25912960

約数和(自身を除く): 4944579

約数列:

[1, 7, 19, 37, 133, 259, 703, 4261, 4921, 29827, 80959, 157657, 566713, 1103599, 2995483, 20968381]

約数ペア:

[(1, 20968381), (7, 2995483), (19, 1103599), (37, 566713), (133, 157657), (259, 80959), (703, 29827), (4261, 4921)]