66878721

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2207}}^1$

素因数の和:2270

約数の個数: 48

約数和(自身を含む): 122164224

約数和(自身を除く): 55285503

約数列:

[1, 3, 7, 9, 13, 21, 37, 39, 63, 91, 111, 117, 259, 273, 333, 481, 777, 819, 1443, 2207, 2331, 3367, 4329, 6621, 10101, 15449, 19863, 28691, 30303, 46347, 81659, 86073, 139041, 200837, 244977, 258219, 571613, 602511, 734931, 1061567, 1714839, 1807533, 3184701, 5144517, 7430969, 9554103, 22292907, 66878721]

約数ペア:

[(1, 66878721), (3, 22292907), (7, 9554103), (9, 7430969), (13, 5144517), (21, 3184701), (37, 1807533), (39, 1714839), (63, 1061567), (91, 734931), (111, 602511), (117, 571613), (259, 258219), (273, 244977), (333, 200837), (481, 139041), (777, 86073), (819, 81659), (1443, 46347), (2207, 30303), (2331, 28691), (3367, 19863), (4329, 15449), (6621, 10101)]