561888640

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:400

約数の個数: 128

約数和(自身を含む): 1403781120

約数和(自身を除く): 841892480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 127, 128, 155, 160, 223, 248, 254, 310, 320, 446, 496, 508, 620, 635, 640, 892, 992, 1016, 1115, 1240, 1270, 1784, 1984, 2032, 2230, 2480, 2540, 3568, 3937, 3968, 4064, 4460, 4960, 5080, 6913, 7136, 7874, 8128, 8920, 9920, 10160, 13826, 14272, 15748, 16256, 17840, 19685, 19840, 20320, 27652, 28321, 28544, 31496, 34565, 35680, 39370, 40640, 55304, 56642, 62992, 69130, 71360, 78740, 81280, 110608, 113284, 125984, 138260, 141605, 142720, 157480, 221216, 226568, 251968, 276520, 283210, 314960, 442432, 453136, 503936, 553040, 566420, 629920, 877951, 884864, 906272, 1106080, 1132840, 1259840, 1755902, 1812544, 2212160, 2265680, 2519680, 3511804, 3625088, 4389755, 4424320, 4531360, 7023608, 8779510, 9062720, 14047216, 17559020, 18125440, 28094432, 35118040, 56188864, 70236080, 112377728, 140472160, 280944320, 561888640]

約数ペア:

[(1, 561888640), (2, 280944320), (4, 140472160), (5, 112377728), (8, 70236080), (10, 56188864), (16, 35118040), (20, 28094432), (31, 18125440), (32, 17559020), (40, 14047216), (62, 9062720), (64, 8779510), (80, 7023608), (124, 4531360), (127, 4424320), (128, 4389755), (155, 3625088), (160, 3511804), (223, 2519680), (248, 2265680), (254, 2212160), (310, 1812544), (320, 1755902), (446, 1259840), (496, 1132840), (508, 1106080), (620, 906272), (635, 884864), (640, 877951), (892, 629920), (992, 566420), (1016, 553040), (1115, 503936), (1240, 453136), (1270, 442432), (1784, 314960), (1984, 283210), (2032, 276520), (2230, 251968), (2480, 226568), (2540, 221216), (3568, 157480), (3937, 142720), (3968, 141605), (4064, 138260), (4460, 125984), (4960, 113284), (5080, 110608), (6913, 81280), (7136, 78740), (7874, 71360), (8128, 69130), (8920, 62992), (9920, 56642), (10160, 55304), (13826, 40640), (14272, 39370), (15748, 35680), (16256, 34565), (17840, 31496), (19685, 28544), (19840, 28321), (20320, 27652)]