16387865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:209

約数の個数: 32

約数和(自身を含む): 22208256

約数和(自身を除く): 5820391

約数列:

[1, 5, 13, 53, 65, 67, 71, 265, 335, 355, 689, 871, 923, 3445, 3551, 3763, 4355, 4615, 4757, 17755, 18815, 23785, 46163, 48919, 61841, 230815, 244595, 252121, 309205, 1260605, 3277573, 16387865]

約数ペア:

[(1, 16387865), (5, 3277573), (13, 1260605), (53, 309205), (65, 252121), (67, 244595), (71, 230815), (265, 61841), (335, 48919), (355, 46163), (689, 23785), (871, 18815), (923, 17755), (3445, 4757), (3551, 4615), (3763, 4355)]