208919560

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{9377}}^1$

素因数の和:9945

約数の個数: 32

約数和(自身を含む): 470963160

約数和(自身を除く): 262043600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 1114, 2228, 2785, 4456, 5570, 9377, 11140, 18754, 22280, 37508, 46885, 75016, 93770, 187540, 375080, 5222989, 10445978, 20891956, 26114945, 41783912, 52229890, 104459780, 208919560]

約数ペア:

[(1, 208919560), (2, 104459780), (4, 52229890), (5, 41783912), (8, 26114945), (10, 20891956), (20, 10445978), (40, 5222989), (557, 375080), (1114, 187540), (2228, 93770), (2785, 75016), (4456, 46885), (5570, 37508), (9377, 22280), (11140, 18754)]