21390332

素因数分解:

$2^2\times {\mathrm{59}}^1\times {\mathrm{233}}^1\times {\mathrm{389}}^1$

素因数の和:685

約数の個数: 24

約数和(自身を含む): 38329200

約数和(自身を除く): 16938868

約数列:

[1, 2, 4, 59, 118, 233, 236, 389, 466, 778, 932, 1556, 13747, 22951, 27494, 45902, 54988, 90637, 91804, 181274, 362548, 5347583, 10695166, 21390332]

約数ペア:

[(1, 21390332), (2, 10695166), (4, 5347583), (59, 362548), (118, 181274), (233, 91804), (236, 90637), (389, 54988), (466, 45902), (778, 27494), (932, 22951), (1556, 13747)]