19991363

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 24829200

約数和(自身を除く): 4837837

約数列:

[1, 7, 19, 49, 109, 133, 197, 763, 931, 1379, 2071, 3743, 5341, 9653, 14497, 21473, 26201, 101479, 150311, 183407, 407987, 1052177, 2855909, 19991363]

約数ペア:

[(1, 19991363), (7, 2855909), (19, 1052177), (49, 407987), (109, 183407), (133, 150311), (197, 101479), (763, 26201), (931, 21473), (1379, 14497), (2071, 9653), (3743, 5341)]