81081008

素因数分解:

$2^4\times {\mathrm{563}}^1\times {\mathrm{9001}}^1$

素因数の和:9572

約数の個数: 20

約数和(自身を含む): 157390968

約数和(自身を除く): 76309960

約数列:

[1, 2, 4, 8, 16, 563, 1126, 2252, 4504, 9001, 9008, 18002, 36004, 72008, 144016, 5067563, 10135126, 20270252, 40540504, 81081008]

約数ペア:

[(1, 81081008), (2, 40540504), (4, 20270252), (8, 10135126), (16, 5067563), (563, 144016), (1126, 72008), (2252, 36004), (4504, 18002), (9001, 9008)]