20737871

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 6841009

約数列:

[1, 7, 11, 29, 37, 77, 203, 251, 259, 319, 407, 1073, 1757, 2233, 2761, 2849, 7279, 7511, 9287, 11803, 19327, 50953, 65009, 80069, 82621, 102157, 269323, 560483, 715099, 1885261, 2962553, 20737871]

約数ペア:

[(1, 20737871), (7, 2962553), (11, 1885261), (29, 715099), (37, 560483), (77, 269323), (203, 102157), (251, 82621), (259, 80069), (319, 65009), (407, 50953), (1073, 19327), (1757, 11803), (2233, 9287), (2761, 7511), (2849, 7279)]