221495680

素因数分解:

$2^7\times 5^1\times 7^3\times {\mathrm{1009}}^1$

素因数の和:1049

約数の個数: 128

約数和(自身を含む): 618120000

約数和(自身を除く): 396624320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 280, 320, 343, 392, 448, 490, 560, 640, 686, 784, 896, 980, 1009, 1120, 1372, 1568, 1715, 1960, 2018, 2240, 2744, 3136, 3430, 3920, 4036, 4480, 5045, 5488, 6272, 6860, 7063, 7840, 8072, 10090, 10976, 13720, 14126, 15680, 16144, 20180, 21952, 27440, 28252, 31360, 32288, 35315, 40360, 43904, 49441, 54880, 56504, 64576, 70630, 80720, 98882, 109760, 113008, 129152, 141260, 161440, 197764, 219520, 226016, 247205, 282520, 322880, 346087, 395528, 452032, 494410, 565040, 645760, 692174, 791056, 904064, 988820, 1130080, 1384348, 1582112, 1730435, 1977640, 2260160, 2768696, 3164224, 3460870, 3955280, 4520320, 5537392, 6328448, 6921740, 7910560, 11074784, 13843480, 15821120, 22149568, 27686960, 31642240, 44299136, 55373920, 110747840, 221495680]

約数ペア:

[(1, 221495680), (2, 110747840), (4, 55373920), (5, 44299136), (7, 31642240), (8, 27686960), (10, 22149568), (14, 15821120), (16, 13843480), (20, 11074784), (28, 7910560), (32, 6921740), (35, 6328448), (40, 5537392), (49, 4520320), (56, 3955280), (64, 3460870), (70, 3164224), (80, 2768696), (98, 2260160), (112, 1977640), (128, 1730435), (140, 1582112), (160, 1384348), (196, 1130080), (224, 988820), (245, 904064), (280, 791056), (320, 692174), (343, 645760), (392, 565040), (448, 494410), (490, 452032), (560, 395528), (640, 346087), (686, 322880), (784, 282520), (896, 247205), (980, 226016), (1009, 219520), (1120, 197764), (1372, 161440), (1568, 141260), (1715, 129152), (1960, 113008), (2018, 109760), (2240, 98882), (2744, 80720), (3136, 70630), (3430, 64576), (3920, 56504), (4036, 54880), (4480, 49441), (5045, 43904), (5488, 40360), (6272, 35315), (6860, 32288), (7063, 31360), (7840, 28252), (8072, 27440), (10090, 21952), (10976, 20180), (13720, 16144), (14126, 15680)]