399976

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{173}}^1$

素因数の和:213

約数の個数: 24

約数和(自身を含む): 801270

約数和(自身を除く): 401294

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 173, 289, 346, 578, 692, 1156, 1384, 2312, 2941, 5882, 11764, 23528, 49997, 99994, 199988, 399976]

約数ペア:

[(1, 399976), (2, 199988), (4, 99994), (8, 49997), (17, 23528), (34, 11764), (68, 5882), (136, 2941), (173, 2312), (289, 1384), (346, 1156), (578, 692)]