20431730

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2087}}^1$

素因数の和:2194

約数の個数: 32

約数和(自身を含む): 40590720

約数和(自身を除く): 20158990

約数列:

[1, 2, 5, 10, 11, 22, 55, 89, 110, 178, 445, 890, 979, 1958, 2087, 4174, 4895, 9790, 10435, 20870, 22957, 45914, 114785, 185743, 229570, 371486, 928715, 1857430, 2043173, 4086346, 10215865, 20431730]

約数ペア:

[(1, 20431730), (2, 10215865), (5, 4086346), (10, 2043173), (11, 1857430), (22, 928715), (55, 371486), (89, 229570), (110, 185743), (178, 114785), (445, 45914), (890, 22957), (979, 20870), (1958, 10435), (2087, 9790), (4174, 4895)]