257392120

素因数分解:

$2^3\times 5^1\times {\mathrm{1277}}^1\times {\mathrm{5039}}^1$

素因数の和:6327

約数の個数: 32

約数和(自身を含む): 579700800

約数和(自身を除く): 322308680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1277, 2554, 5039, 5108, 6385, 10078, 10216, 12770, 20156, 25195, 25540, 40312, 50390, 51080, 100780, 201560, 6434803, 12869606, 25739212, 32174015, 51478424, 64348030, 128696060, 257392120]

約数ペア:

[(1, 257392120), (2, 128696060), (4, 64348030), (5, 51478424), (8, 32174015), (10, 25739212), (20, 12869606), (40, 6434803), (1277, 201560), (2554, 100780), (5039, 51080), (5108, 50390), (6385, 40312), (10078, 25540), (10216, 25195), (12770, 20156)]