18971216

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{107791}}^1$

素因数の和:107810

約数の個数: 20

約数和(自身を含む): 40098624

約数和(自身を除く): 21127408

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 107791, 215582, 431164, 862328, 1185701, 1724656, 2371402, 4742804, 9485608, 18971216]

約数ペア:

[(1, 18971216), (2, 9485608), (4, 4742804), (8, 2371402), (11, 1724656), (16, 1185701), (22, 862328), (44, 431164), (88, 215582), (176, 107791)]