12987681

素因数分解:

$3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{6949}}^1$

素因数の和:7048

約数の個数: 16

約数和(自身を含む): 20016000

約数和(自身を除く): 7028319

約数列:

[1, 3, 7, 21, 89, 267, 623, 1869, 6949, 20847, 48643, 145929, 618461, 1855383, 4329227, 12987681]

約数ペア:

[(1, 12987681), (3, 4329227), (7, 1855383), (21, 618461), (89, 145929), (267, 48643), (623, 20847), (1869, 6949)]