21836515

素因数分解:

$5^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:606

約数の個数: 16

約数和(自身を含む): 26769600

約数和(自身を除く): 4933085

約数列:

[1, 5, 103, 109, 389, 515, 545, 1945, 11227, 40067, 42401, 56135, 200335, 212005, 4367303, 21836515]

約数ペア:

[(1, 21836515), (5, 4367303), (103, 212005), (109, 200335), (389, 56135), (515, 42401), (545, 40067), (1945, 11227)]