20281131

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{57781}}^1$

素因数の和:57803

約数の個数: 16

約数和(自身を含む): 32357920

約数和(自身を除く): 12076789

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 57781, 173343, 520029, 751153, 1560087, 2253459, 6760377, 20281131]

約数ペア:

[(1, 20281131), (3, 6760377), (9, 2253459), (13, 1560087), (27, 751153), (39, 520029), (117, 173343), (351, 57781)]