20571880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73471}}^1$

素因数の和:73489

約数の個数: 32

約数和(自身を含む): 52899840

約数和(自身を除く): 32327960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 73471, 146942, 293884, 367355, 514297, 587768, 734710, 1028594, 1469420, 2057188, 2571485, 2938840, 4114376, 5142970, 10285940, 20571880]

約数ペア:

[(1, 20571880), (2, 10285940), (4, 5142970), (5, 4114376), (7, 2938840), (8, 2571485), (10, 2057188), (14, 1469420), (20, 1028594), (28, 734710), (35, 587768), (40, 514297), (56, 367355), (70, 293884), (140, 146942), (280, 73471)]