18899699

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{643}}^1$

素因数の和:699

約数の個数: 32

約数和(自身を含む): 25966080

約数和(自身を除く): 7066381

約数列:

[1, 7, 13, 17, 19, 91, 119, 133, 221, 247, 323, 643, 1547, 1729, 2261, 4199, 4501, 8359, 10931, 12217, 29393, 58513, 76517, 85519, 142103, 158821, 207689, 994721, 1111747, 1453823, 2699957, 18899699]

約数ペア:

[(1, 18899699), (7, 2699957), (13, 1453823), (17, 1111747), (19, 994721), (91, 207689), (119, 158821), (133, 142103), (221, 85519), (247, 76517), (323, 58513), (643, 29393), (1547, 12217), (1729, 10931), (2261, 8359), (4199, 4501)]