21985271

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{5827}}^1$

素因数の和:5859

約数の個数: 16

約数和(自身を含む): 27974400

約数和(自身を除く): 5989129

約数列:

[1, 7, 11, 49, 77, 343, 539, 3773, 5827, 40789, 64097, 285523, 448679, 1998661, 3140753, 21985271]

約数ペア:

[(1, 21985271), (7, 3140753), (11, 1998661), (49, 448679), (77, 285523), (343, 64097), (539, 40789), (3773, 5827)]