28121175

素因数分解:

$3^6\times 5^2\times {\mathrm{1543}}^1$

素因数の和:1571

約数の個数: 42

約数和(自身を含む): 52315352

約数和(自身を除く): 24194177

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 405, 675, 729, 1215, 1543, 2025, 3645, 4629, 6075, 7715, 13887, 18225, 23145, 38575, 41661, 69435, 115725, 124983, 208305, 347175, 374949, 624915, 1041525, 1124847, 1874745, 3124575, 5624235, 9373725, 28121175]

約数ペア:

[(1, 28121175), (3, 9373725), (5, 5624235), (9, 3124575), (15, 1874745), (25, 1124847), (27, 1041525), (45, 624915), (75, 374949), (81, 347175), (135, 208305), (225, 124983), (243, 115725), (405, 69435), (675, 41661), (729, 38575), (1215, 23145), (1543, 18225), (2025, 13887), (3645, 7715), (4629, 6075)]