639641600

素因数分解:

$2^{11}\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2$

素因数の和:107

約数の個数: 216

約数和(自身を含む): 1764789390

約数和(自身を除く): 1125147790

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 64, 65, 80, 100, 104, 124, 128, 130, 155, 160, 200, 208, 248, 256, 260, 310, 320, 325, 400, 403, 416, 496, 512, 520, 620, 640, 650, 775, 800, 806, 832, 961, 992, 1024, 1040, 1240, 1280, 1300, 1550, 1600, 1612, 1664, 1922, 1984, 2015, 2048, 2080, 2480, 2560, 2600, 3100, 3200, 3224, 3328, 3844, 3968, 4030, 4160, 4805, 4960, 5120, 5200, 6200, 6400, 6448, 6656, 7688, 7936, 8060, 8320, 9610, 9920, 10075, 10240, 10400, 12400, 12493, 12800, 12896, 13312, 15376, 15872, 16120, 16640, 19220, 19840, 20150, 20800, 24025, 24800, 24986, 25600, 25792, 26624, 30752, 31744, 32240, 33280, 38440, 39680, 40300, 41600, 48050, 49600, 49972, 51200, 51584, 61504, 62465, 63488, 64480, 66560, 76880, 79360, 80600, 83200, 96100, 99200, 99944, 103168, 123008, 124930, 128960, 133120, 153760, 158720, 161200, 166400, 192200, 198400, 199888, 206336, 246016, 249860, 257920, 307520, 312325, 317440, 322400, 332800, 384400, 396800, 399776, 412672, 492032, 499720, 515840, 615040, 624650, 644800, 665600, 768800, 793600, 799552, 825344, 984064, 999440, 1031680, 1230080, 1249300, 1289600, 1537600, 1587200, 1599104, 1968128, 1998880, 2063360, 2460160, 2498600, 2579200, 3075200, 3198208, 3997760, 4126720, 4920320, 4997200, 5158400, 6150400, 6396416, 7995520, 9840640, 9994400, 10316800, 12300800, 12792832, 15991040, 19988800, 20633600, 24601600, 25585664, 31982080, 39977600, 49203200, 63964160, 79955200, 127928320, 159910400, 319820800, 639641600]

約数ペア:

[(1, 639641600), (2, 319820800), (4, 159910400), (5, 127928320), (8, 79955200), (10, 63964160), (13, 49203200), (16, 39977600), (20, 31982080), (25, 25585664), (26, 24601600), (31, 20633600), (32, 19988800), (40, 15991040), (50, 12792832), (52, 12300800), (62, 10316800), (64, 9994400), (65, 9840640), (80, 7995520), (100, 6396416), (104, 6150400), (124, 5158400), (128, 4997200), (130, 4920320), (155, 4126720), (160, 3997760), (200, 3198208), (208, 3075200), (248, 2579200), (256, 2498600), (260, 2460160), (310, 2063360), (320, 1998880), (325, 1968128), (400, 1599104), (403, 1587200), (416, 1537600), (496, 1289600), (512, 1249300), (520, 1230080), (620, 1031680), (640, 999440), (650, 984064), (775, 825344), (800, 799552), (806, 793600), (832, 768800), (961, 665600), (992, 644800), (1024, 624650), (1040, 615040), (1240, 515840), (1280, 499720), (1300, 492032), (1550, 412672), (1600, 399776), (1612, 396800), (1664, 384400), (1922, 332800), (1984, 322400), (2015, 317440), (2048, 312325), (2080, 307520), (2480, 257920), (2560, 249860), (2600, 246016), (3100, 206336), (3200, 199888), (3224, 198400), (3328, 192200), (3844, 166400), (3968, 161200), (4030, 158720), (4160, 153760), (4805, 133120), (4960, 128960), (5120, 124930), (5200, 123008), (6200, 103168), (6400, 99944), (6448, 99200), (6656, 96100), (7688, 83200), (7936, 80600), (8060, 79360), (8320, 76880), (9610, 66560), (9920, 64480), (10075, 63488), (10240, 62465), (10400, 61504), (12400, 51584), (12493, 51200), (12800, 49972), (12896, 49600), (13312, 48050), (15376, 41600), (15872, 40300), (16120, 39680), (16640, 38440), (19220, 33280), (19840, 32240), (20150, 31744), (20800, 30752), (24025, 26624), (24800, 25792), (24986, 25600)]