51781540

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{23753}}^1$

素因数の和:23871

約数の個数: 24

約数和(自身を含む): 109743480

約数和(自身を除く): 57961940

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 23753, 47506, 95012, 118765, 237530, 475060, 2589077, 5178154, 10356308, 12945385, 25890770, 51781540]

約数ペア:

[(1, 51781540), (2, 25890770), (4, 12945385), (5, 10356308), (10, 5178154), (20, 2589077), (109, 475060), (218, 237530), (436, 118765), (545, 95012), (1090, 47506), (2180, 23753)]