21574384

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103723}}^1$

素因数の和:103744

約数の個数: 20

約数和(自身を含む): 45016216

約数和(自身を除く): 23441832

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103723, 207446, 414892, 829784, 1348399, 1659568, 2696798, 5393596, 10787192, 21574384]

約数ペア:

[(1, 21574384), (2, 10787192), (4, 5393596), (8, 2696798), (13, 1659568), (16, 1348399), (26, 829784), (52, 414892), (104, 207446), (208, 103723)]