28640885

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3313}}^1$

素因数の和:3357

約数の個数: 32

約数和(自身を含む): 44540160

約数和(自身を除く): 15899275

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 247, 455, 665, 1235, 1729, 3313, 8645, 16565, 23191, 43069, 62947, 115955, 215345, 301483, 314735, 440629, 818311, 1507415, 2203145, 4091555, 5728177, 28640885]

約数ペア:

[(1, 28640885), (5, 5728177), (7, 4091555), (13, 2203145), (19, 1507415), (35, 818311), (65, 440629), (91, 314735), (95, 301483), (133, 215345), (247, 115955), (455, 62947), (665, 43069), (1235, 23191), (1729, 16565), (3313, 8645)]