28311980

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{6709}}^1$

素因数の和:6929

約数の個数: 24

約数和(自身を含む): 59745840

約数和(自身を除く): 31433860

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 6709, 13418, 26836, 33545, 67090, 134180, 1415599, 2831198, 5662396, 7077995, 14155990, 28311980]

約数ペア:

[(1, 28311980), (2, 14155990), (4, 7077995), (5, 5662396), (10, 2831198), (20, 1415599), (211, 134180), (422, 67090), (844, 33545), (1055, 26836), (2110, 13418), (4220, 6709)]