28402913

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 37281792

約数和(自身を除く): 8878879

約数列:

[1, 7, 11, 31, 73, 77, 163, 217, 341, 511, 803, 1141, 1793, 2263, 2387, 5053, 5621, 11899, 12551, 15841, 24893, 35371, 55583, 83293, 130889, 174251, 368869, 389081, 916223, 2582083, 4057559, 28402913]

約数ペア:

[(1, 28402913), (7, 4057559), (11, 2582083), (31, 916223), (73, 389081), (77, 368869), (163, 174251), (217, 130889), (341, 83293), (511, 55583), (803, 35371), (1141, 24893), (1793, 15841), (2263, 12551), (2387, 11899), (5053, 5621)]