80770120

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 186480000

約数和(自身を除く): 105709880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 139, 146, 199, 278, 292, 365, 398, 556, 584, 695, 730, 796, 995, 1112, 1390, 1460, 1592, 1990, 2780, 2920, 3980, 5560, 7960, 10147, 14527, 20294, 27661, 29054, 40588, 50735, 55322, 58108, 72635, 81176, 101470, 110644, 116216, 138305, 145270, 202940, 221288, 276610, 290540, 405880, 553220, 581080, 1106440, 2019253, 4038506, 8077012, 10096265, 16154024, 20192530, 40385060, 80770120]

約数ペア:

[(1, 80770120), (2, 40385060), (4, 20192530), (5, 16154024), (8, 10096265), (10, 8077012), (20, 4038506), (40, 2019253), (73, 1106440), (139, 581080), (146, 553220), (199, 405880), (278, 290540), (292, 276610), (365, 221288), (398, 202940), (556, 145270), (584, 138305), (695, 116216), (730, 110644), (796, 101470), (995, 81176), (1112, 72635), (1390, 58108), (1460, 55322), (1592, 50735), (1990, 40588), (2780, 29054), (2920, 27661), (3980, 20294), (5560, 14527), (7960, 10147)]