12212515

素因数分解:

$5^1\times 7^3\times {\mathrm{7121}}^1$

素因数の和:7147

約数の個数: 16

約数和(自身を含む): 17092800

約数和(自身を除く): 4880285

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 7121, 35605, 49847, 249235, 348929, 1744645, 2442503, 12212515]

約数ペア:

[(1, 12212515), (5, 2442503), (7, 1744645), (35, 348929), (49, 249235), (245, 49847), (343, 35605), (1715, 7121)]