18728281

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 23748480

約数和(自身を除く): 5020199

約数列:

[1, 11, 13, 19, 61, 113, 143, 209, 247, 671, 793, 1159, 1243, 1469, 2147, 2717, 6893, 8723, 12749, 15067, 16159, 23617, 27911, 75823, 89609, 130967, 165737, 307021, 985699, 1440637, 1702571, 18728281]

約数ペア:

[(1, 18728281), (11, 1702571), (13, 1440637), (19, 985699), (61, 307021), (113, 165737), (143, 130967), (209, 89609), (247, 75823), (671, 27911), (793, 23617), (1159, 16159), (1243, 15067), (1469, 12749), (2147, 8723), (2717, 6893)]