19951568

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:292

約数の個数: 80

約数和(自身を含む): 48496896

約数和(自身を除く): 28545328

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 71, 91, 104, 112, 142, 182, 193, 208, 284, 364, 386, 497, 568, 728, 772, 923, 994, 1136, 1351, 1456, 1544, 1846, 1988, 2509, 2702, 3088, 3692, 3976, 5018, 5404, 6461, 7384, 7952, 10036, 10808, 12922, 13703, 14768, 17563, 20072, 21616, 25844, 27406, 35126, 40144, 51688, 54812, 70252, 95921, 103376, 109624, 140504, 178139, 191842, 219248, 281008, 356278, 383684, 712556, 767368, 1246973, 1425112, 1534736, 2493946, 2850224, 4987892, 9975784, 19951568]

約数ペア:

[(1, 19951568), (2, 9975784), (4, 4987892), (7, 2850224), (8, 2493946), (13, 1534736), (14, 1425112), (16, 1246973), (26, 767368), (28, 712556), (52, 383684), (56, 356278), (71, 281008), (91, 219248), (104, 191842), (112, 178139), (142, 140504), (182, 109624), (193, 103376), (208, 95921), (284, 70252), (364, 54812), (386, 51688), (497, 40144), (568, 35126), (728, 27406), (772, 25844), (923, 21616), (994, 20072), (1136, 17563), (1351, 14768), (1456, 13703), (1544, 12922), (1846, 10808), (1988, 10036), (2509, 7952), (2702, 7384), (3088, 6461), (3692, 5404), (3976, 5018)]