20488130

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{439}}^1$

素因数の和:818

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19428670

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 359, 439, 718, 878, 1795, 2195, 3590, 4390, 4667, 5707, 9334, 11414, 23335, 28535, 46670, 57070, 157601, 315202, 788005, 1576010, 2048813, 4097626, 10244065, 20488130]

約数ペア:

[(1, 20488130), (2, 10244065), (5, 4097626), (10, 2048813), (13, 1576010), (26, 788005), (65, 315202), (130, 157601), (359, 57070), (439, 46670), (718, 28535), (878, 23335), (1795, 11414), (2195, 9334), (3590, 5707), (4390, 4667)]