81791687.000000000

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{179}}^1\times {\mathrm{977}}^1$

素因数の和:1205

約数の個数: 40

約数和(自身を含む): 229204080

約数和(自身を除く): 114480832

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 179, 328, 358, 656, 716, 977, 1432, 1954, 2864, 3908, 7339, 7816, 14678, 15632, 29356, 40057, 58712, 80114, 117424, 160228, 174883, 320456, 349766, 640912, 699532, 1399064, 2798128, 7170203, 14340406, 28680812, 57361624, 114723248]

約数ペア:

[(1, 114723248), (2, 57361624), (4, 28680812), (8, 14340406), (16, 7170203), (41, 2798128), (82, 1399064), (164, 699532), (179, 640912), (328, 349766), (358, 320456), (656, 174883), (716, 160228), (977, 117424), (1432, 80114), (1954, 58712), (2864, 40057), (3908, 29356), (7339, 15632), (7816, 14678)]