81791985

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 149299200

約数和(自身を除く): 67507215

約数列:

[1, 3, 5, 11, 15, 33, 47, 53, 55, 141, 159, 165, 199, 235, 265, 517, 583, 597, 705, 795, 995, 1551, 1749, 2189, 2491, 2585, 2915, 2985, 6567, 7473, 7755, 8745, 9353, 10547, 10945, 12455, 27401, 28059, 31641, 32835, 37365, 46765, 52735, 82203, 102883, 116017, 137005, 140295, 158205, 308649, 348051, 411015, 495709, 514415, 580085, 1487127, 1543245, 1740255, 2478545, 5452799, 7435635, 16358397, 27263995, 81791985]

約数ペア:

[(1, 81791985), (3, 27263995), (5, 16358397), (11, 7435635), (15, 5452799), (33, 2478545), (47, 1740255), (53, 1543245), (55, 1487127), (141, 580085), (159, 514415), (165, 495709), (199, 411015), (235, 348051), (265, 308649), (517, 158205), (583, 140295), (597, 137005), (705, 116017), (795, 102883), (995, 82203), (1551, 52735), (1749, 46765), (2189, 37365), (2491, 32835), (2585, 31641), (2915, 28059), (2985, 27401), (6567, 12455), (7473, 10945), (7755, 10547), (8745, 9353)]