21338564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{8731}}^1$

素因数の和:8795

約数の個数: 24

約数和(自身を含む): 41075328

約数和(自身を除く): 19736764

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 188, 611, 1222, 2444, 8731, 17462, 34924, 113503, 227006, 410357, 454012, 820714, 1641428, 5334641, 10669282, 21338564]

約数ペア:

[(1, 21338564), (2, 10669282), (4, 5334641), (13, 1641428), (26, 820714), (47, 454012), (52, 410357), (94, 227006), (188, 113503), (611, 34924), (1222, 17462), (2444, 8731)]