257517720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:370

約数の個数: 192

約数和(自身を含む): 872726400

約数和(自身を除く): 615208680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 41, 45, 60, 72, 73, 82, 90, 120, 123, 146, 164, 180, 205, 219, 239, 246, 292, 328, 360, 365, 369, 410, 438, 478, 492, 584, 615, 657, 717, 730, 738, 820, 876, 956, 984, 1095, 1195, 1230, 1314, 1434, 1460, 1476, 1640, 1752, 1845, 1912, 2151, 2190, 2390, 2460, 2628, 2868, 2920, 2952, 2993, 3285, 3585, 3690, 4302, 4380, 4780, 4920, 5256, 5736, 5986, 6570, 7170, 7380, 8604, 8760, 8979, 9560, 9799, 10755, 11972, 13140, 14340, 14760, 14965, 17208, 17447, 17958, 19598, 21510, 23944, 26280, 26937, 28680, 29397, 29930, 34894, 35916, 39196, 43020, 44895, 48995, 52341, 53874, 58794, 59860, 69788, 71832, 78392, 86040, 87235, 88191, 89790, 97990, 104682, 107748, 117588, 119720, 134685, 139576, 146985, 157023, 174470, 176382, 179580, 195980, 209364, 215496, 235176, 261705, 269370, 293970, 314046, 348940, 352764, 359160, 391960, 418728, 440955, 523410, 538740, 587940, 628092, 697880, 705528, 715327, 785115, 881910, 1046820, 1077480, 1175880, 1256184, 1430654, 1570230, 1763820, 2093640, 2145981, 2861308, 3140460, 3527640, 3576635, 4291962, 5722616, 6280920, 6437943, 7153270, 8583924, 10729905, 12875886, 14306540, 17167848, 21459810, 25751772, 28613080, 32189715, 42919620, 51503544, 64379430, 85839240, 128758860, 257517720]

約数ペア:

[(1, 257517720), (2, 128758860), (3, 85839240), (4, 64379430), (5, 51503544), (6, 42919620), (8, 32189715), (9, 28613080), (10, 25751772), (12, 21459810), (15, 17167848), (18, 14306540), (20, 12875886), (24, 10729905), (30, 8583924), (36, 7153270), (40, 6437943), (41, 6280920), (45, 5722616), (60, 4291962), (72, 3576635), (73, 3527640), (82, 3140460), (90, 2861308), (120, 2145981), (123, 2093640), (146, 1763820), (164, 1570230), (180, 1430654), (205, 1256184), (219, 1175880), (239, 1077480), (246, 1046820), (292, 881910), (328, 785115), (360, 715327), (365, 705528), (369, 697880), (410, 628092), (438, 587940), (478, 538740), (492, 523410), (584, 440955), (615, 418728), (657, 391960), (717, 359160), (730, 352764), (738, 348940), (820, 314046), (876, 293970), (956, 269370), (984, 261705), (1095, 235176), (1195, 215496), (1230, 209364), (1314, 195980), (1434, 179580), (1460, 176382), (1476, 174470), (1640, 157023), (1752, 146985), (1845, 139576), (1912, 134685), (2151, 119720), (2190, 117588), (2390, 107748), (2460, 104682), (2628, 97990), (2868, 89790), (2920, 88191), (2952, 87235), (2993, 86040), (3285, 78392), (3585, 71832), (3690, 69788), (4302, 59860), (4380, 58794), (4780, 53874), (4920, 52341), (5256, 48995), (5736, 44895), (5986, 43020), (6570, 39196), (7170, 35916), (7380, 34894), (8604, 29930), (8760, 29397), (8979, 28680), (9560, 26937), (9799, 26280), (10755, 23944), (11972, 21510), (13140, 19598), (14340, 17958), (14760, 17447), (14965, 17208)]