28311115

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 40360320

約数和(自身を除く): 12049205

約数列:

[1, 5, 7, 35, 41, 109, 181, 205, 287, 545, 763, 905, 1267, 1435, 3815, 4469, 6335, 7421, 19729, 22345, 31283, 37105, 51947, 98645, 138103, 156415, 259735, 690515, 808889, 4044445, 5662223, 28311115]

約数ペア:

[(1, 28311115), (5, 5662223), (7, 4044445), (35, 808889), (41, 690515), (109, 259735), (181, 156415), (205, 138103), (287, 98645), (545, 51947), (763, 37105), (905, 31283), (1267, 22345), (1435, 19729), (3815, 7421), (4469, 6335)]