15921225

素因数分解:

$3^3\times 5^2\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:351

約数の個数: 48

約数和(自身を含む): 29660800

約数和(自身を除く): 13739575

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 103, 135, 225, 229, 309, 515, 675, 687, 927, 1145, 1545, 2061, 2575, 2781, 3435, 4635, 5725, 6183, 7725, 10305, 13905, 17175, 23175, 23587, 30915, 51525, 69525, 70761, 117935, 154575, 212283, 353805, 589675, 636849, 1061415, 1769025, 3184245, 5307075, 15921225]

約数ペア:

[(1, 15921225), (3, 5307075), (5, 3184245), (9, 1769025), (15, 1061415), (25, 636849), (27, 589675), (45, 353805), (75, 212283), (103, 154575), (135, 117935), (225, 70761), (229, 69525), (309, 51525), (515, 30915), (675, 23587), (687, 23175), (927, 17175), (1145, 13905), (1545, 10305), (2061, 7725), (2575, 6183), (2781, 5725), (3435, 4635)]