20451730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157321}}^1$

素因数の和:157341

約数の個数: 16

約数和(自身を含む): 39645144

約数和(自身を除く): 19193414

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157321, 314642, 786605, 1573210, 2045173, 4090346, 10225865, 20451730]

約数ペア:

[(1, 20451730), (2, 10225865), (5, 4090346), (10, 2045173), (13, 1573210), (26, 786605), (65, 314642), (130, 157321)]