18972811

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{6983}}^1$

素因数の和:7026

約数の個数: 16

約数和(自身を含む): 23466240

約数和(自身を除く): 4493429

約数列:

[1, 11, 13, 19, 143, 209, 247, 2717, 6983, 76813, 90779, 132677, 998569, 1459447, 1724801, 18972811]

約数ペア:

[(1, 18972811), (11, 1724801), (13, 1459447), (19, 998569), (143, 132677), (209, 90779), (247, 76813), (2717, 6983)]