16540420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{63617}}^1$

素因数の和:63639

約数の個数: 24

約数和(自身を含む): 37407384

約数和(自身を除く): 20866964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 63617, 127234, 254468, 318085, 636170, 827021, 1272340, 1654042, 3308084, 4135105, 8270210, 16540420]

約数ペア:

[(1, 16540420), (2, 8270210), (4, 4135105), (5, 3308084), (10, 1654042), (13, 1272340), (20, 827021), (26, 636170), (52, 318085), (65, 254468), (130, 127234), (260, 63617)]