21501381

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{1327}}^1$

素因数の和:1832

約数の個数: 16

約数和(自身を含む): 31362048

約数和(自身を除く): 9860667

約数列:

[1, 3, 11, 33, 491, 1327, 1473, 3981, 5401, 14597, 16203, 43791, 651557, 1954671, 7167127, 21501381]

約数ペア:

[(1, 21501381), (3, 7167127), (11, 1954671), (33, 651557), (491, 43791), (1327, 16203), (1473, 14597), (3981, 5401)]