81192969

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1237}}^1$

素因数の和:1287

約数の個数: 64

約数和(自身を含む): 149748480

約数和(自身を除く): 68555511

約数列:

[1, 3, 9, 11, 13, 17, 27, 33, 39, 51, 99, 117, 143, 153, 187, 221, 297, 351, 429, 459, 561, 663, 1237, 1287, 1683, 1989, 2431, 3711, 3861, 5049, 5967, 7293, 11133, 13607, 16081, 21029, 21879, 33399, 40821, 48243, 63087, 65637, 122463, 144729, 176891, 189261, 231319, 273377, 367389, 434187, 530673, 567783, 693957, 820131, 1592019, 2081871, 2460393, 3007147, 4776057, 6245613, 7381179, 9021441, 27064323, 81192969]

約数ペア:

[(1, 81192969), (3, 27064323), (9, 9021441), (11, 7381179), (13, 6245613), (17, 4776057), (27, 3007147), (33, 2460393), (39, 2081871), (51, 1592019), (99, 820131), (117, 693957), (143, 567783), (153, 530673), (187, 434187), (221, 367389), (297, 273377), (351, 231319), (429, 189261), (459, 176891), (561, 144729), (663, 122463), (1237, 65637), (1287, 63087), (1683, 48243), (1989, 40821), (2431, 33399), (3711, 21879), (3861, 21029), (5049, 16081), (5967, 13607), (7293, 11133)]