2019921729

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{691991}}^1$

素因数の和:692140

約数の個数: 16

約数和(自身を含む): 3100124160

約数和(自身を除く): 1080202431

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 691991, 2075973, 4843937, 14531811, 96186749, 288560247, 673307243, 2019921729]

約数ペア:

[(1, 2019921729), (3, 673307243), (7, 288560247), (21, 96186749), (139, 14531811), (417, 4843937), (973, 2075973), (2919, 691991)]