138239536

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{210731}}^1$

素因数の和:210780

約数の個数: 20

約数和(自身を含む): 274373064

約数和(自身を除く): 136133528

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 210731, 421462, 842924, 1685848, 3371696, 8639971, 17279942, 34559884, 69119768, 138239536]

約数ペア:

[(1, 138239536), (2, 69119768), (4, 34559884), (8, 17279942), (16, 8639971), (41, 3371696), (82, 1685848), (164, 842924), (328, 421462), (656, 210731)]