19860475

素因数分解:

$5^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:315

約数の個数: 24

約数和(自身を含む): 25498368

約数和(自身を除く): 5637893

約数列:

[1, 5, 25, 67, 71, 167, 335, 355, 835, 1675, 1775, 4175, 4757, 11189, 11857, 23785, 55945, 59285, 118925, 279725, 296425, 794419, 3972095, 19860475]

約数ペア:

[(1, 19860475), (5, 3972095), (25, 794419), (67, 296425), (71, 279725), (167, 118925), (335, 59285), (355, 55945), (835, 23785), (1675, 11857), (1775, 11189), (4175, 4757)]