20568664

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{349}}^1$

素因数の和:547

約数の個数: 32

約数和(自身を含む): 39690000

約数和(自身を除く): 19121336

約数列:

[1, 2, 4, 8, 53, 106, 139, 212, 278, 349, 424, 556, 698, 1112, 1396, 2792, 7367, 14734, 18497, 29468, 36994, 48511, 58936, 73988, 97022, 147976, 194044, 388088, 2571083, 5142166, 10284332, 20568664]

約数ペア:

[(1, 20568664), (2, 10284332), (4, 5142166), (8, 2571083), (53, 388088), (106, 194044), (139, 147976), (212, 97022), (278, 73988), (349, 58936), (424, 48511), (556, 36994), (698, 29468), (1112, 18497), (1396, 14734), (2792, 7367)]