205715139

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1\times {\mathrm{557}}^1$

素因数の和:1019

約数の個数: 32

約数和(自身を含む): 322122240

約数和(自身を除く): 116407101

約数列:

[1, 3, 7, 21, 43, 129, 301, 409, 557, 903, 1227, 1671, 2863, 3899, 8589, 11697, 17587, 23951, 52761, 71853, 123109, 167657, 227813, 369327, 502971, 683439, 1594691, 4784073, 9795959, 29387877, 68571713, 205715139]

約数ペア:

[(1, 205715139), (3, 68571713), (7, 29387877), (21, 9795959), (43, 4784073), (129, 1594691), (301, 683439), (409, 502971), (557, 369327), (903, 227813), (1227, 167657), (1671, 123109), (2863, 71853), (3899, 52761), (8589, 23951), (11697, 17587)]