81405328

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{199}}^1\times {\mathrm{691}}^1$

素因数の和:935

約数の個数: 40

約数和(自身を含む): 163035200

約数和(自身を除く): 81629872

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 199, 296, 398, 592, 691, 796, 1382, 1592, 2764, 3184, 5528, 7363, 11056, 14726, 25567, 29452, 51134, 58904, 102268, 117808, 137509, 204536, 275018, 409072, 550036, 1100072, 2200144, 5087833, 10175666, 20351332, 40702664, 81405328]

約数ペア:

[(1, 81405328), (2, 40702664), (4, 20351332), (8, 10175666), (16, 5087833), (37, 2200144), (74, 1100072), (148, 550036), (199, 409072), (296, 275018), (398, 204536), (592, 137509), (691, 117808), (796, 102268), (1382, 58904), (1592, 51134), (2764, 29452), (3184, 25567), (5528, 14726), (7363, 11056)]