281378560

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{193}}^1$

素因数の和:298

約数の個数: 144

約数和(自身を含む): 728040096

約数和(自身を除く): 446661536

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 67, 68, 80, 85, 128, 134, 136, 160, 170, 193, 256, 268, 272, 320, 335, 340, 386, 536, 544, 640, 670, 680, 772, 965, 1072, 1088, 1139, 1280, 1340, 1360, 1544, 1930, 2144, 2176, 2278, 2680, 2720, 3088, 3281, 3860, 4288, 4352, 4556, 5360, 5440, 5695, 6176, 6562, 7720, 8576, 9112, 10720, 10880, 11390, 12352, 12931, 13124, 15440, 16405, 17152, 18224, 21440, 21760, 22780, 24704, 25862, 26248, 30880, 32810, 36448, 42880, 45560, 49408, 51724, 52496, 61760, 64655, 65620, 72896, 85760, 91120, 103448, 104992, 123520, 129310, 131240, 145792, 182240, 206896, 209984, 219827, 247040, 258620, 262480, 291584, 364480, 413792, 419968, 439654, 517240, 524960, 728960, 827584, 839936, 879308, 1034480, 1049920, 1099135, 1457920, 1655168, 1758616, 2068960, 2099840, 2198270, 3310336, 3517232, 4137920, 4199680, 4396540, 7034464, 8275840, 8793080, 14068928, 16551680, 17586160, 28137856, 35172320, 56275712, 70344640, 140689280, 281378560]

約数ペア:

[(1, 281378560), (2, 140689280), (4, 70344640), (5, 56275712), (8, 35172320), (10, 28137856), (16, 17586160), (17, 16551680), (20, 14068928), (32, 8793080), (34, 8275840), (40, 7034464), (64, 4396540), (67, 4199680), (68, 4137920), (80, 3517232), (85, 3310336), (128, 2198270), (134, 2099840), (136, 2068960), (160, 1758616), (170, 1655168), (193, 1457920), (256, 1099135), (268, 1049920), (272, 1034480), (320, 879308), (335, 839936), (340, 827584), (386, 728960), (536, 524960), (544, 517240), (640, 439654), (670, 419968), (680, 413792), (772, 364480), (965, 291584), (1072, 262480), (1088, 258620), (1139, 247040), (1280, 219827), (1340, 209984), (1360, 206896), (1544, 182240), (1930, 145792), (2144, 131240), (2176, 129310), (2278, 123520), (2680, 104992), (2720, 103448), (3088, 91120), (3281, 85760), (3860, 72896), (4288, 65620), (4352, 64655), (4556, 61760), (5360, 52496), (5440, 51724), (5695, 49408), (6176, 45560), (6562, 42880), (7720, 36448), (8576, 32810), (9112, 30880), (10720, 26248), (10880, 25862), (11390, 24704), (12352, 22780), (12931, 21760), (13124, 21440), (15440, 18224), (16405, 17152)]