81399664

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{49393}}^1$

素因数の和:49504

約数の個数: 20

約数和(自身を含む): 159246256

約数和(自身を除く): 77846592

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 49393, 98786, 197572, 395144, 790288, 5087479, 10174958, 20349916, 40699832, 81399664]

約数ペア:

[(1, 81399664), (2, 40699832), (4, 20349916), (8, 10174958), (16, 5087479), (103, 790288), (206, 395144), (412, 197572), (824, 98786), (1648, 49393)]