21487076

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{2141}}^1$

素因数の和:2351

約数の個数: 24

約数和(自身を含む): 40723704

約数和(自身を除く): 19236628

約数列:

[1, 2, 4, 13, 26, 52, 193, 386, 772, 2141, 2509, 4282, 5018, 8564, 10036, 27833, 55666, 111332, 413213, 826426, 1652852, 5371769, 10743538, 21487076]

約数ペア:

[(1, 21487076), (2, 10743538), (4, 5371769), (13, 1652852), (26, 826426), (52, 413213), (193, 111332), (386, 55666), (772, 27833), (2141, 10036), (2509, 8564), (4282, 5018)]