20998809

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1777}}^1$

素因数の和:1897

約数の個数: 24

約数和(自身を含む): 33006792

約数和(自身を除く): 12007983

約数列:

[1, 3, 9, 13, 39, 101, 117, 303, 909, 1313, 1777, 3939, 5331, 11817, 15993, 23101, 69303, 179477, 207909, 538431, 1615293, 2333201, 6999603, 20998809]

約数ペア:

[(1, 20998809), (3, 6999603), (9, 2333201), (13, 1615293), (39, 538431), (101, 207909), (117, 179477), (303, 69303), (909, 23101), (1313, 15993), (1777, 11817), (3939, 5331)]