21498412

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{1031}}^1$

素因数の和:1449

約数の個数: 24

約数和(自身を含む): 40656672

約数和(自身を除く): 19158260

約数列:

[1, 2, 4, 13, 26, 52, 401, 802, 1031, 1604, 2062, 4124, 5213, 10426, 13403, 20852, 26806, 53612, 413431, 826862, 1653724, 5374603, 10749206, 21498412]

約数ペア:

[(1, 21498412), (2, 10749206), (4, 5374603), (13, 1653724), (26, 826862), (52, 413431), (401, 53612), (802, 26806), (1031, 20852), (1604, 13403), (2062, 10426), (4124, 5213)]