131036380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{211349}}^1$

素因数の和:211389

約数の個数: 24

約数和(自身を含む): 284054400

約数和(自身を除く): 153018020

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 211349, 422698, 845396, 1056745, 2113490, 4226980, 6551819, 13103638, 26207276, 32759095, 65518190, 131036380]

約数ペア:

[(1, 131036380), (2, 65518190), (4, 32759095), (5, 26207276), (10, 13103638), (20, 6551819), (31, 4226980), (62, 2113490), (124, 1056745), (155, 845396), (310, 422698), (620, 211349)]