81311615

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{211199}}^1$

素因数の和:211222

約数の個数: 16

約数和(自身を含む): 121651200

約数和(自身を除く): 40339585

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 211199, 1055995, 1478393, 2323189, 7391965, 11615945, 16262323, 81311615]

約数ペア:

[(1, 81311615), (5, 16262323), (7, 11615945), (11, 7391965), (35, 2323189), (55, 1478393), (77, 1055995), (385, 211199)]