21080072

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{202693}}^1$

素因数の和:202712

約数の個数: 16

約数和(自身を含む): 42565740

約数和(自身を除く): 21485668

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 202693, 405386, 810772, 1621544, 2635009, 5270018, 10540036, 21080072]

約数ペア:

[(1, 21080072), (2, 10540036), (4, 5270018), (8, 2635009), (13, 1621544), (26, 810772), (52, 405386), (104, 202693)]