20159972

素因数分解:

$2^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{1409}}^1$

素因数の和:1500

約数の個数: 36

約数和(自身を含む): 41631660

約数和(自身を除く): 21471688

約数列:

[1, 2, 4, 7, 14, 28, 49, 73, 98, 146, 196, 292, 511, 1022, 1409, 2044, 2818, 3577, 5636, 7154, 9863, 14308, 19726, 39452, 69041, 102857, 138082, 205714, 276164, 411428, 719999, 1439998, 2879996, 5039993, 10079986, 20159972]

約数ペア:

[(1, 20159972), (2, 10079986), (4, 5039993), (7, 2879996), (14, 1439998), (28, 719999), (49, 411428), (73, 276164), (98, 205714), (146, 138082), (196, 102857), (292, 69041), (511, 39452), (1022, 19726), (1409, 14308), (2044, 9863), (2818, 7154), (3577, 5636)]