28105209

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{907}}^1$

素因数の和:1237

約数の個数: 24

約数和(自身を含む): 44477472

約数和(自身を除く): 16372263

約数列:

[1, 3, 9, 11, 33, 99, 313, 907, 939, 2721, 2817, 3443, 8163, 9977, 10329, 29931, 30987, 89793, 283891, 851673, 2555019, 3122801, 9368403, 28105209]

約数ペア:

[(1, 28105209), (3, 9368403), (9, 3122801), (11, 2555019), (33, 851673), (99, 283891), (313, 89793), (907, 30987), (939, 29931), (2721, 10329), (2817, 9977), (3443, 8163)]