209995520

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1019}}^1$

素因数の和:1070

約数の個数: 144

約数和(自身を含む): 600445440

約数和(自身を除く): 390449920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 64, 70, 80, 92, 112, 115, 128, 140, 160, 161, 184, 224, 230, 256, 280, 320, 322, 368, 448, 460, 560, 640, 644, 736, 805, 896, 920, 1019, 1120, 1280, 1288, 1472, 1610, 1792, 1840, 2038, 2240, 2576, 2944, 3220, 3680, 4076, 4480, 5095, 5152, 5888, 6440, 7133, 7360, 8152, 8960, 10190, 10304, 12880, 14266, 14720, 16304, 20380, 20608, 23437, 25760, 28532, 29440, 32608, 35665, 40760, 41216, 46874, 51520, 57064, 65216, 71330, 81520, 93748, 103040, 114128, 117185, 130432, 142660, 163040, 164059, 187496, 206080, 228256, 234370, 260864, 285320, 326080, 328118, 374992, 456512, 468740, 570640, 652160, 656236, 749984, 820295, 913024, 937480, 1141280, 1304320, 1312472, 1499968, 1640590, 1826048, 1874960, 2282560, 2624944, 2999936, 3281180, 3749920, 4565120, 5249888, 5999872, 6562360, 7499840, 9130240, 10499776, 13124720, 14999680, 20999552, 26249440, 29999360, 41999104, 52498880, 104997760, 209995520]

約数ペア:

[(1, 209995520), (2, 104997760), (4, 52498880), (5, 41999104), (7, 29999360), (8, 26249440), (10, 20999552), (14, 14999680), (16, 13124720), (20, 10499776), (23, 9130240), (28, 7499840), (32, 6562360), (35, 5999872), (40, 5249888), (46, 4565120), (56, 3749920), (64, 3281180), (70, 2999936), (80, 2624944), (92, 2282560), (112, 1874960), (115, 1826048), (128, 1640590), (140, 1499968), (160, 1312472), (161, 1304320), (184, 1141280), (224, 937480), (230, 913024), (256, 820295), (280, 749984), (320, 656236), (322, 652160), (368, 570640), (448, 468740), (460, 456512), (560, 374992), (640, 328118), (644, 326080), (736, 285320), (805, 260864), (896, 234370), (920, 228256), (1019, 206080), (1120, 187496), (1280, 164059), (1288, 163040), (1472, 142660), (1610, 130432), (1792, 117185), (1840, 114128), (2038, 103040), (2240, 93748), (2576, 81520), (2944, 71330), (3220, 65216), (3680, 57064), (4076, 51520), (4480, 46874), (5095, 41216), (5152, 40760), (5888, 35665), (6440, 32608), (7133, 29440), (7360, 28532), (8152, 25760), (8960, 23437), (10190, 20608), (10304, 20380), (12880, 16304), (14266, 14720)]