638962560

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{359}}^1$

素因数の和:490

約数の個数: 256

約数和(自身を含む): 2291328000

約数和(自身を除く): 1652365440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 103, 108, 120, 128, 135, 144, 160, 180, 192, 206, 216, 240, 270, 288, 309, 320, 359, 360, 384, 412, 432, 480, 515, 540, 576, 618, 640, 718, 720, 824, 864, 927, 960, 1030, 1077, 1080, 1152, 1236, 1436, 1440, 1545, 1648, 1728, 1795, 1854, 1920, 2060, 2154, 2160, 2472, 2781, 2872, 2880, 3090, 3231, 3296, 3456, 3590, 3708, 4120, 4308, 4320, 4635, 4944, 5385, 5562, 5744, 5760, 6180, 6462, 6592, 7180, 7416, 8240, 8616, 8640, 9270, 9693, 9888, 10770, 11124, 11488, 12360, 12924, 13184, 13905, 14360, 14832, 16155, 16480, 17232, 17280, 18540, 19386, 19776, 21540, 22248, 22976, 24720, 25848, 27810, 28720, 29664, 32310, 32960, 34464, 36977, 37080, 38772, 39552, 43080, 44496, 45952, 48465, 49440, 51696, 55620, 57440, 59328, 64620, 65920, 68928, 73954, 74160, 77544, 86160, 88992, 96930, 98880, 103392, 110931, 111240, 114880, 118656, 129240, 137856, 147908, 148320, 155088, 172320, 177984, 184885, 193860, 197760, 206784, 221862, 222480, 229760, 258480, 295816, 296640, 310176, 332793, 344640, 355968, 369770, 387720, 413568, 443724, 444960, 516960, 554655, 591632, 593280, 620352, 665586, 689280, 739540, 775440, 887448, 889920, 998379, 1033920, 1109310, 1183264, 1240704, 1331172, 1479080, 1550880, 1663965, 1774896, 1779840, 1996758, 2067840, 2218620, 2366528, 2662344, 2958160, 3101760, 3327930, 3549792, 3993516, 4437240, 4733056, 4991895, 5324688, 5916320, 6203520, 6655860, 7099584, 7987032, 8874480, 9983790, 10649376, 11832640, 13311720, 14199168, 15974064, 17748960, 19967580, 21298752, 23665280, 26623440, 31948128, 35497920, 39935160, 42597504, 53246880, 63896256, 70995840, 79870320, 106493760, 127792512, 159740640, 212987520, 319481280, 638962560]

約数ペア:

[(1, 638962560), (2, 319481280), (3, 212987520), (4, 159740640), (5, 127792512), (6, 106493760), (8, 79870320), (9, 70995840), (10, 63896256), (12, 53246880), (15, 42597504), (16, 39935160), (18, 35497920), (20, 31948128), (24, 26623440), (27, 23665280), (30, 21298752), (32, 19967580), (36, 17748960), (40, 15974064), (45, 14199168), (48, 13311720), (54, 11832640), (60, 10649376), (64, 9983790), (72, 8874480), (80, 7987032), (90, 7099584), (96, 6655860), (103, 6203520), (108, 5916320), (120, 5324688), (128, 4991895), (135, 4733056), (144, 4437240), (160, 3993516), (180, 3549792), (192, 3327930), (206, 3101760), (216, 2958160), (240, 2662344), (270, 2366528), (288, 2218620), (309, 2067840), (320, 1996758), (359, 1779840), (360, 1774896), (384, 1663965), (412, 1550880), (432, 1479080), (480, 1331172), (515, 1240704), (540, 1183264), (576, 1109310), (618, 1033920), (640, 998379), (718, 889920), (720, 887448), (824, 775440), (864, 739540), (927, 689280), (960, 665586), (1030, 620352), (1077, 593280), (1080, 591632), (1152, 554655), (1236, 516960), (1436, 444960), (1440, 443724), (1545, 413568), (1648, 387720), (1728, 369770), (1795, 355968), (1854, 344640), (1920, 332793), (2060, 310176), (2154, 296640), (2160, 295816), (2472, 258480), (2781, 229760), (2872, 222480), (2880, 221862), (3090, 206784), (3231, 197760), (3296, 193860), (3456, 184885), (3590, 177984), (3708, 172320), (4120, 155088), (4308, 148320), (4320, 147908), (4635, 137856), (4944, 129240), (5385, 118656), (5562, 114880), (5744, 111240), (5760, 110931), (6180, 103392), (6462, 98880), (6592, 96930), (7180, 88992), (7416, 86160), (8240, 77544), (8616, 74160), (8640, 73954), (9270, 68928), (9693, 65920), (9888, 64620), (10770, 59328), (11124, 57440), (11488, 55620), (12360, 51696), (12924, 49440), (13184, 48465), (13905, 45952), (14360, 44496), (14832, 43080), (16155, 39552), (16480, 38772), (17232, 37080), (17280, 36977), (18540, 34464), (19386, 32960), (19776, 32310), (21540, 29664), (22248, 28720), (22976, 27810), (24720, 25848)]