21088791992

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{1115573}}^1$

素因数の和:1115735

約数の個数: 32

約数和(自身を含む): 42168697200

約数和(自身を除く): 21079905208

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 139, 278, 556, 1112, 2363, 4726, 9452, 18904, 1115573, 2231146, 4462292, 8924584, 18964741, 37929482, 75858964, 151717928, 155064647, 310129294, 620258588, 1240517176, 2636098999, 5272197998, 10544395996, 21088791992]

約数ペア:

[(1, 21088791992), (2, 10544395996), (4, 5272197998), (8, 2636098999), (17, 1240517176), (34, 620258588), (68, 310129294), (136, 155064647), (139, 151717928), (278, 75858964), (556, 37929482), (1112, 18964741), (2363, 8924584), (4726, 4462292), (9452, 2231146), (18904, 1115573)]