19320975

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{1997}}^1$

素因数の和:2056

約数の個数: 36

約数和(自身を含む): 35428536

約数和(自身を除く): 16107561

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1935, 1997, 3225, 5991, 9675, 9985, 17973, 29955, 49925, 85871, 89865, 149775, 257613, 429355, 449325, 772839, 1288065, 2146775, 3864195, 6440325, 19320975]

約数ペア:

[(1, 19320975), (3, 6440325), (5, 3864195), (9, 2146775), (15, 1288065), (25, 772839), (43, 449325), (45, 429355), (75, 257613), (129, 149775), (215, 89865), (225, 85871), (387, 49925), (645, 29955), (1075, 17973), (1935, 9985), (1997, 9675), (3225, 5991)]