68506040

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2591}}^1$

素因数の和:3263

約数の個数: 32

約数和(自身を含む): 154431360

約数和(自身を除く): 85925320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2591, 2644, 3305, 5182, 5288, 6610, 10364, 12955, 13220, 20728, 25910, 26440, 51820, 103640, 1712651, 3425302, 6850604, 8563255, 13701208, 17126510, 34253020, 68506040]

約数ペア:

[(1, 68506040), (2, 34253020), (4, 17126510), (5, 13701208), (8, 8563255), (10, 6850604), (20, 3425302), (40, 1712651), (661, 103640), (1322, 51820), (2591, 26440), (2644, 25910), (3305, 20728), (5182, 13220), (5288, 12955), (6610, 10364)]