28004470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6949}}^1$

素因数の和:7000

約数の個数: 32

約数和(自身を含む): 56044800

約数和(自身を除く): 28040330

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 6949, 13898, 34745, 69490, 90337, 180674, 215419, 430838, 451685, 903370, 1077095, 2154190, 2800447, 5600894, 14002235, 28004470]

約数ペア:

[(1, 28004470), (2, 14002235), (5, 5600894), (10, 2800447), (13, 2154190), (26, 1077095), (31, 903370), (62, 451685), (65, 430838), (130, 215419), (155, 180674), (310, 90337), (403, 69490), (806, 34745), (2015, 13898), (4030, 6949)]