20149160

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2557}}^1$

素因数の和:2765

約数の個数: 32

約数和(自身を含む): 45583560

約数和(自身を除く): 25434400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 2557, 3940, 5114, 7880, 10228, 12785, 20456, 25570, 51140, 102280, 503729, 1007458, 2014916, 2518645, 4029832, 5037290, 10074580, 20149160]

約数ペア:

[(1, 20149160), (2, 10074580), (4, 5037290), (5, 4029832), (8, 2518645), (10, 2014916), (20, 1007458), (40, 503729), (197, 102280), (394, 51140), (788, 25570), (985, 20456), (1576, 12785), (1970, 10228), (2557, 7880), (3940, 5114)]