21787251

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{5147}}^1$

素因数の和:5250

約数の個数: 16

約数和(自身を含む): 31135104

約数和(自身を除く): 9347853

約数列:

[1, 3, 17, 51, 83, 249, 1411, 4233, 5147, 15441, 87499, 262497, 427201, 1281603, 7262417, 21787251]

約数ペア:

[(1, 21787251), (3, 7262417), (17, 1281603), (51, 427201), (83, 262497), (249, 87499), (1411, 15441), (4233, 5147)]