21111861

素因数分解:

$3^1\times {\mathrm{23}}^2\times {\mathrm{53}}^1\times {\mathrm{251}}^1$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 30100896

約数和(自身を除く): 8989035

約数列:

[1, 3, 23, 53, 69, 159, 251, 529, 753, 1219, 1587, 3657, 5773, 13303, 17319, 28037, 39909, 84111, 132779, 305969, 398337, 917907, 7037287, 21111861]

約数ペア:

[(1, 21111861), (3, 7037287), (23, 917907), (53, 398337), (69, 305969), (159, 132779), (251, 84111), (529, 39909), (753, 28037), (1219, 17319), (1587, 13303), (3657, 5773)]