21244899

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{3919}}^1$

素因数の和:4074

約数の個数: 16

約数和(自身を含む): 30732800

約数和(自身を除く): 9487901

約数列:

[1, 3, 13, 39, 139, 417, 1807, 3919, 5421, 11757, 50947, 152841, 544741, 1634223, 7081633, 21244899]

約数ペア:

[(1, 21244899), (3, 7081633), (13, 1634223), (39, 544741), (139, 152841), (417, 50947), (1807, 11757), (3919, 5421)]