21276357

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 31021056

約数和(自身を除く): 9744699

約数列:

[1, 3, 23, 43, 69, 71, 101, 129, 213, 303, 989, 1633, 2323, 2967, 3053, 4343, 4899, 6969, 7171, 9159, 13029, 21513, 70219, 99889, 164933, 210657, 299667, 308353, 494799, 925059, 7092119, 21276357]

約数ペア:

[(1, 21276357), (3, 7092119), (23, 925059), (43, 494799), (69, 308353), (71, 299667), (101, 210657), (129, 164933), (213, 99889), (303, 70219), (989, 21513), (1633, 13029), (2323, 9159), (2967, 7171), (3053, 6969), (4343, 4899)]