18959213

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3931}}^1$

素因数の和:4004

約数の個数: 16

約数和(自身を含む): 23780736

約数和(自身を除く): 4821523

約数列:

[1, 7, 13, 53, 91, 371, 689, 3931, 4823, 27517, 51103, 208343, 357721, 1458401, 2708459, 18959213]

約数ペア:

[(1, 18959213), (7, 2708459), (13, 1458401), (53, 357721), (91, 208343), (371, 51103), (689, 27517), (3931, 4823)]