258053780

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{20129}}^1$

素因数の和:20779

約数の個数: 24

約数和(自身を含む): 542785320

約数和(自身を除く): 284731540

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 12820, 20129, 40258, 80516, 100645, 201290, 402580, 12902689, 25805378, 51610756, 64513445, 129026890, 258053780]

約数ペア:

[(1, 258053780), (2, 129026890), (4, 64513445), (5, 51610756), (10, 25805378), (20, 12902689), (641, 402580), (1282, 201290), (2564, 100645), (3205, 80516), (6410, 40258), (12820, 20129)]