81430240

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5039}}^1$

素因数の和:5155

約数の個数: 48

約数和(自身を含む): 194322240

約数和(自身を除く): 112892000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1616, 2020, 3232, 4040, 5039, 8080, 10078, 16160, 20156, 25195, 40312, 50390, 80624, 100780, 161248, 201560, 403120, 508939, 806240, 1017878, 2035756, 2544695, 4071512, 5089390, 8143024, 10178780, 16286048, 20357560, 40715120, 81430240]

約数ペア:

[(1, 81430240), (2, 40715120), (4, 20357560), (5, 16286048), (8, 10178780), (10, 8143024), (16, 5089390), (20, 4071512), (32, 2544695), (40, 2035756), (80, 1017878), (101, 806240), (160, 508939), (202, 403120), (404, 201560), (505, 161248), (808, 100780), (1010, 80624), (1616, 50390), (2020, 40312), (3232, 25195), (4040, 20156), (5039, 16160), (8080, 10078)]