638291212

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{93701}}^1$

素因数の和:93849

約数の個数: 24

約数和(自身を含む): 1212129072

約数和(自身を除く): 573837860

約数列:

[1, 2, 4, 13, 26, 52, 131, 262, 524, 1703, 3406, 6812, 93701, 187402, 374804, 1218113, 2436226, 4872452, 12274831, 24549662, 49099324, 159572803, 319145606, 638291212]

約数ペア:

[(1, 638291212), (2, 319145606), (4, 159572803), (13, 49099324), (26, 24549662), (52, 12274831), (131, 4872452), (262, 2436226), (524, 1218113), (1703, 374804), (3406, 187402), (6812, 93701)]