18833815

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:160

約数の個数: 64

約数和(自身を含む): 31352832

約数和(自身を除く): 12519017

約数列:

[1, 5, 7, 11, 13, 35, 53, 55, 65, 71, 77, 91, 143, 265, 355, 371, 385, 455, 497, 583, 689, 715, 781, 923, 1001, 1855, 2485, 2915, 3445, 3763, 3905, 4081, 4615, 4823, 5005, 5467, 6461, 7579, 10153, 18815, 20405, 24115, 26341, 27335, 32305, 37895, 41393, 48919, 50765, 53053, 71071, 131705, 206965, 244595, 265265, 289751, 342433, 355355, 538109, 1448755, 1712165, 2690545, 3766763, 18833815]

約数ペア:

[(1, 18833815), (5, 3766763), (7, 2690545), (11, 1712165), (13, 1448755), (35, 538109), (53, 355355), (55, 342433), (65, 289751), (71, 265265), (77, 244595), (91, 206965), (143, 131705), (265, 71071), (355, 53053), (371, 50765), (385, 48919), (455, 41393), (497, 37895), (583, 32305), (689, 27335), (715, 26341), (781, 24115), (923, 20405), (1001, 18815), (1855, 10153), (2485, 7579), (2915, 6461), (3445, 5467), (3763, 5005), (3905, 4823), (4081, 4615)]