20784414365

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{398207}}^1$

素因数の和:398309

約数の個数: 32

約数和(自身を含む): 29703131136

約数和(自身を除く): 8918716771

約数列:

[1, 5, 11, 13, 55, 65, 73, 143, 365, 715, 803, 949, 4015, 4745, 10439, 52195, 398207, 1991035, 4380277, 5176691, 21901385, 25883455, 29069111, 56943601, 145345555, 284718005, 319760221, 377898443, 1598801105, 1889492215, 4156882873, 20784414365]

約数ペア:

[(1, 20784414365), (5, 4156882873), (11, 1889492215), (13, 1598801105), (55, 377898443), (65, 319760221), (73, 284718005), (143, 145345555), (365, 56943601), (715, 29069111), (803, 25883455), (949, 21901385), (4015, 5176691), (4745, 4380277), (10439, 1991035), (52195, 398207)]