21257600

素因数分解:

$2^7\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1$

素因数の和:117

約数の個数: 192

約数和(自身を含む): 65516640

約数和(自身を除く): 44259040

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 32, 35, 40, 50, 52, 56, 64, 65, 70, 73, 80, 91, 100, 104, 112, 128, 130, 140, 146, 160, 175, 182, 200, 208, 224, 260, 280, 292, 320, 325, 350, 364, 365, 400, 416, 448, 455, 511, 520, 560, 584, 640, 650, 700, 728, 730, 800, 832, 896, 910, 949, 1022, 1040, 1120, 1168, 1300, 1400, 1456, 1460, 1600, 1664, 1820, 1825, 1898, 2044, 2080, 2240, 2275, 2336, 2555, 2600, 2800, 2912, 2920, 3200, 3640, 3650, 3796, 4088, 4160, 4480, 4550, 4672, 4745, 5110, 5200, 5600, 5824, 5840, 6643, 7280, 7300, 7592, 8176, 8320, 9100, 9344, 9490, 10220, 10400, 11200, 11648, 11680, 12775, 13286, 14560, 14600, 15184, 16352, 18200, 18980, 20440, 20800, 22400, 23360, 23725, 25550, 26572, 29120, 29200, 30368, 32704, 33215, 36400, 37960, 40880, 41600, 46720, 47450, 51100, 53144, 58240, 58400, 60736, 65408, 66430, 72800, 75920, 81760, 94900, 102200, 106288, 116800, 121472, 132860, 145600, 151840, 163520, 166075, 189800, 204400, 212576, 233600, 265720, 291200, 303680, 327040, 332150, 379600, 408800, 425152, 531440, 607360, 664300, 759200, 817600, 850304, 1062880, 1328600, 1518400, 1635200, 2125760, 2657200, 3036800, 4251520, 5314400, 10628800, 21257600]

約数ペア:

[(1, 21257600), (2, 10628800), (4, 5314400), (5, 4251520), (7, 3036800), (8, 2657200), (10, 2125760), (13, 1635200), (14, 1518400), (16, 1328600), (20, 1062880), (25, 850304), (26, 817600), (28, 759200), (32, 664300), (35, 607360), (40, 531440), (50, 425152), (52, 408800), (56, 379600), (64, 332150), (65, 327040), (70, 303680), (73, 291200), (80, 265720), (91, 233600), (100, 212576), (104, 204400), (112, 189800), (128, 166075), (130, 163520), (140, 151840), (146, 145600), (160, 132860), (175, 121472), (182, 116800), (200, 106288), (208, 102200), (224, 94900), (260, 81760), (280, 75920), (292, 72800), (320, 66430), (325, 65408), (350, 60736), (364, 58400), (365, 58240), (400, 53144), (416, 51100), (448, 47450), (455, 46720), (511, 41600), (520, 40880), (560, 37960), (584, 36400), (640, 33215), (650, 32704), (700, 30368), (728, 29200), (730, 29120), (800, 26572), (832, 25550), (896, 23725), (910, 23360), (949, 22400), (1022, 20800), (1040, 20440), (1120, 18980), (1168, 18200), (1300, 16352), (1400, 15184), (1456, 14600), (1460, 14560), (1600, 13286), (1664, 12775), (1820, 11680), (1825, 11648), (1898, 11200), (2044, 10400), (2080, 10220), (2240, 9490), (2275, 9344), (2336, 9100), (2555, 8320), (2600, 8176), (2800, 7592), (2912, 7300), (2920, 7280), (3200, 6643), (3640, 5840), (3650, 5824), (3796, 5600), (4088, 5200), (4160, 5110), (4480, 4745), (4550, 4672)]