17782660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1789}}^1$

素因数の和:1876

約数の個数: 48

約数和(自身を含む): 43303680

約数和(自身を除く): 25521020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1789, 1988, 2485, 3578, 4970, 7156, 8945, 9940, 12523, 17890, 25046, 35780, 50092, 62615, 125230, 127019, 250460, 254038, 508076, 635095, 889133, 1270190, 1778266, 2540380, 3556532, 4445665, 8891330, 17782660]

約数ペア:

[(1, 17782660), (2, 8891330), (4, 4445665), (5, 3556532), (7, 2540380), (10, 1778266), (14, 1270190), (20, 889133), (28, 635095), (35, 508076), (70, 254038), (71, 250460), (140, 127019), (142, 125230), (284, 62615), (355, 50092), (497, 35780), (710, 25046), (994, 17890), (1420, 12523), (1789, 9940), (1988, 8945), (2485, 7156), (3578, 4970)]