20969595

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10837}}^1$

素因数の和:10891

約数の個数: 24

約数和(自身を含む): 37196016

約数和(自身を除く): 16226421

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 10837, 32511, 54185, 97533, 162555, 465991, 487665, 1397973, 2329955, 4193919, 6989865, 20969595]

約数ペア:

[(1, 20969595), (3, 6989865), (5, 4193919), (9, 2329955), (15, 1397973), (43, 487665), (45, 465991), (129, 162555), (215, 97533), (387, 54185), (645, 32511), (1935, 10837)]