19878066

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:320

約数の個数: 96

約数和(自身を含む): 51891840

約数和(自身を除く): 32013774

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 19, 26, 34, 38, 39, 51, 57, 78, 102, 114, 117, 153, 171, 221, 234, 247, 263, 306, 323, 342, 442, 494, 526, 646, 663, 741, 789, 969, 1326, 1482, 1578, 1938, 1989, 2223, 2367, 2907, 3419, 3978, 4199, 4446, 4471, 4734, 4997, 5814, 6838, 8398, 8942, 9994, 10257, 12597, 13413, 14991, 20514, 25194, 26826, 29982, 30771, 37791, 40239, 44973, 58123, 61542, 64961, 75582, 80478, 84949, 89946, 116246, 129922, 169898, 174369, 194883, 254847, 348738, 389766, 509694, 523107, 584649, 764541, 1046214, 1104337, 1169298, 1529082, 2208674, 3313011, 6626022, 9939033, 19878066]

約数ペア:

[(1, 19878066), (2, 9939033), (3, 6626022), (6, 3313011), (9, 2208674), (13, 1529082), (17, 1169298), (18, 1104337), (19, 1046214), (26, 764541), (34, 584649), (38, 523107), (39, 509694), (51, 389766), (57, 348738), (78, 254847), (102, 194883), (114, 174369), (117, 169898), (153, 129922), (171, 116246), (221, 89946), (234, 84949), (247, 80478), (263, 75582), (306, 64961), (323, 61542), (342, 58123), (442, 44973), (494, 40239), (526, 37791), (646, 30771), (663, 29982), (741, 26826), (789, 25194), (969, 20514), (1326, 14991), (1482, 13413), (1578, 12597), (1938, 10257), (1989, 9994), (2223, 8942), (2367, 8398), (2907, 6838), (3419, 5814), (3978, 4997), (4199, 4734), (4446, 4471)]