640206720

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{37049}}^1$

素因数の和:37077

約数の個数: 128

約数和(自身を含む): 2267460000

約数和(自身を除く): 1627253280

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, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 864, 960, 1080, 1152, 1440, 1728, 1920, 2160, 2880, 3456, 4320, 5760, 8640, 17280, 37049, 74098, 111147, 148196, 185245, 222294, 296392, 333441, 370490, 444588, 555735, 592784, 666882, 740980, 889176, 1000323, 1111470, 1185568, 1333764, 1481960, 1667205, 1778352, 2000646, 2222940, 2371136, 2667528, 2963920, 3334410, 3556704, 4001292, 4445880, 4742272, 5001615, 5335056, 5927840, 6668820, 7113408, 8002584, 8891760, 10003230, 10670112, 11855680, 13337640, 14226816, 16005168, 17783520, 20006460, 21340224, 23711360, 26675280, 32010336, 35567040, 40012920, 42680448, 53350560, 64020672, 71134080, 80025840, 106701120, 128041344, 160051680, 213402240, 320103360, 640206720]

約数ペア:

[(1, 640206720), (2, 320103360), (3, 213402240), (4, 160051680), (5, 128041344), (6, 106701120), (8, 80025840), (9, 71134080), (10, 64020672), (12, 53350560), (15, 42680448), (16, 40012920), (18, 35567040), (20, 32010336), (24, 26675280), (27, 23711360), (30, 21340224), (32, 20006460), (36, 17783520), (40, 16005168), (45, 14226816), (48, 13337640), (54, 11855680), (60, 10670112), (64, 10003230), (72, 8891760), (80, 8002584), (90, 7113408), (96, 6668820), (108, 5927840), (120, 5335056), (128, 5001615), (135, 4742272), (144, 4445880), (160, 4001292), (180, 3556704), (192, 3334410), (216, 2963920), (240, 2667528), (270, 2371136), (288, 2222940), (320, 2000646), (360, 1778352), (384, 1667205), (432, 1481960), (480, 1333764), (540, 1185568), (576, 1111470), (640, 1000323), (720, 889176), (864, 740980), (960, 666882), (1080, 592784), (1152, 555735), (1440, 444588), (1728, 370490), (1920, 333441), (2160, 296392), (2880, 222294), (3456, 185245), (4320, 148196), (5760, 111147), (8640, 74098), (17280, 37049)]