81999218

素因数分解:

$2^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{9109}}^1$

素因数の和:9761

約数の個数: 16

約数和(自身を含む): 140804160

約数和(自身を除く): 58804942

約数列:

[1, 2, 7, 14, 643, 1286, 4501, 9002, 9109, 18218, 63763, 127526, 5857087, 11714174, 40999609, 81999218]

約数ペア:

[(1, 81999218), (2, 40999609), (7, 11714174), (14, 5857087), (643, 127526), (1286, 63763), (4501, 18218), (9002, 9109)]