20780028

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{10891}}^1$

素因数の和:10954

約数の個数: 36

約数和(自身を含む): 53523288

約数和(自身を除く): 32743260

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 106, 159, 212, 318, 477, 636, 954, 1908, 10891, 21782, 32673, 43564, 65346, 98019, 130692, 196038, 392076, 577223, 1154446, 1731669, 2308892, 3463338, 5195007, 6926676, 10390014, 20780028]

約数ペア:

[(1, 20780028), (2, 10390014), (3, 6926676), (4, 5195007), (6, 3463338), (9, 2308892), (12, 1731669), (18, 1154446), (36, 577223), (53, 392076), (106, 196038), (159, 130692), (212, 98019), (318, 65346), (477, 43564), (636, 32673), (954, 21782), (1908, 10891)]