80489360

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{20533}}^1$

素因数の和:20560

約数の個数: 60

約数和(自身を含む): 217701468

約数和(自身を除く): 137212108

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 20533, 41066, 82132, 102665, 143731, 164264, 205330, 287462, 328528, 410660, 574924, 718655, 821320, 1006117, 1149848, 1437310, 1642640, 2012234, 2299696, 2874620, 4024468, 5030585, 5749240, 8048936, 10061170, 11498480, 16097872, 20122340, 40244680, 80489360]

約数ペア:

[(1, 80489360), (2, 40244680), (4, 20122340), (5, 16097872), (7, 11498480), (8, 10061170), (10, 8048936), (14, 5749240), (16, 5030585), (20, 4024468), (28, 2874620), (35, 2299696), (40, 2012234), (49, 1642640), (56, 1437310), (70, 1149848), (80, 1006117), (98, 821320), (112, 718655), (140, 574924), (196, 410660), (245, 328528), (280, 287462), (392, 205330), (490, 164264), (560, 143731), (784, 102665), (980, 82132), (1960, 41066), (3920, 20533)]