28945475

素因数分解:

$5^2\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:97

約数の個数: 48

約数和(自身を含む): 42497280

約数和(自身を除く): 13551805

約数列:

[1, 5, 13, 17, 25, 31, 65, 85, 155, 169, 221, 325, 403, 425, 527, 775, 845, 1105, 2015, 2197, 2635, 2873, 4225, 5239, 5525, 6851, 10075, 10985, 13175, 14365, 26195, 34255, 37349, 54925, 68107, 71825, 89063, 130975, 171275, 186745, 340535, 445315, 933725, 1157819, 1702675, 2226575, 5789095, 28945475]

約数ペア:

[(1, 28945475), (5, 5789095), (13, 2226575), (17, 1702675), (25, 1157819), (31, 933725), (65, 445315), (85, 340535), (155, 186745), (169, 171275), (221, 130975), (325, 89063), (403, 71825), (425, 68107), (527, 54925), (775, 37349), (845, 34255), (1105, 26195), (2015, 14365), (2197, 13175), (2635, 10985), (2873, 10075), (4225, 6851), (5239, 5525)]