21127912

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{911}}^1$

素因数の和:1153

約数の個数: 32

約数和(自身を含む): 42900480

約数和(自身を除く): 21772568

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 223, 446, 892, 911, 1784, 1822, 2899, 3644, 5798, 7288, 11596, 11843, 23192, 23686, 47372, 94744, 203153, 406306, 812612, 1625224, 2640989, 5281978, 10563956, 21127912]

約数ペア:

[(1, 21127912), (2, 10563956), (4, 5281978), (8, 2640989), (13, 1625224), (26, 812612), (52, 406306), (104, 203153), (223, 94744), (446, 47372), (892, 23686), (911, 23192), (1784, 11843), (1822, 11596), (2899, 7288), (3644, 5798)]