211312305

素因数分解:

$3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{643}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 375735360

約数和(自身を除く): 164423055

約数列:

[1, 3, 5, 9, 15, 45, 67, 109, 201, 327, 335, 545, 603, 643, 981, 1005, 1635, 1929, 3015, 3215, 4905, 5787, 7303, 9645, 21909, 28935, 36515, 43081, 65727, 70087, 109545, 129243, 210261, 215405, 328635, 350435, 387729, 630783, 646215, 1051305, 1938645, 3153915, 4695829, 14087487, 23479145, 42262461, 70437435, 211312305]

約数ペア:

[(1, 211312305), (3, 70437435), (5, 42262461), (9, 23479145), (15, 14087487), (45, 4695829), (67, 3153915), (109, 1938645), (201, 1051305), (327, 646215), (335, 630783), (545, 387729), (603, 350435), (643, 328635), (981, 215405), (1005, 210261), (1635, 129243), (1929, 109545), (3015, 70087), (3215, 65727), (4905, 43081), (5787, 36515), (7303, 28935), (9645, 21909)]