256725580

素因数分解:

$2^2\times 5^1\times {\mathrm{1669}}^1\times {\mathrm{7691}}^1$

素因数の和:9369

約数の個数: 24

約数和(自身を含む): 539516880

約数和(自身を除く): 282791300

約数列:

[1, 2, 4, 5, 10, 20, 1669, 3338, 6676, 7691, 8345, 15382, 16690, 30764, 33380, 38455, 76910, 153820, 12836279, 25672558, 51345116, 64181395, 128362790, 256725580]

約数ペア:

[(1, 256725580), (2, 128362790), (4, 64181395), (5, 51345116), (10, 25672558), (20, 12836279), (1669, 153820), (3338, 76910), (6676, 38455), (7691, 33380), (8345, 30764), (15382, 16690)]