28100475

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{739}}^1$

素因数の和:781

約数の個数: 54

約数和(自身を含む): 54574260

約数和(自身を除く): 26473785

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 169, 195, 225, 325, 507, 585, 739, 845, 975, 1521, 2217, 2535, 2925, 3695, 4225, 6651, 7605, 9607, 11085, 12675, 18475, 28821, 33255, 38025, 48035, 55425, 86463, 124891, 144105, 166275, 240175, 374673, 432315, 624455, 720525, 1124019, 1873365, 2161575, 3122275, 5620095, 9366825, 28100475]

約数ペア:

[(1, 28100475), (3, 9366825), (5, 5620095), (9, 3122275), (13, 2161575), (15, 1873365), (25, 1124019), (39, 720525), (45, 624455), (65, 432315), (75, 374673), (117, 240175), (169, 166275), (195, 144105), (225, 124891), (325, 86463), (507, 55425), (585, 48035), (739, 38025), (845, 33255), (975, 28821), (1521, 18475), (2217, 12675), (2535, 11085), (2925, 9607), (3695, 7605), (4225, 6651)]