16991275

素因数分解:

$5^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{643}}^1$

素因数の和:811

約数の個数: 24

約数和(自身を含む): 24276224

約数和(自身を除く): 7284949

約数列:

[1, 5, 7, 25, 35, 151, 175, 643, 755, 1057, 3215, 3775, 4501, 5285, 16075, 22505, 26425, 97093, 112525, 485465, 679651, 2427325, 3398255, 16991275]

約数ペア:

[(1, 16991275), (5, 3398255), (7, 2427325), (25, 679651), (35, 485465), (151, 112525), (175, 97093), (643, 26425), (755, 22505), (1057, 16075), (3215, 5285), (3775, 4501)]