20527921

素因数分解:

${\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{521}}^1$

素因数の和:624

約数の個数: 12

約数和(自身を含む): 21770532

約数和(自身を除く): 1242611

約数列:

[1, 31, 41, 521, 961, 1271, 16151, 21361, 39401, 500681, 662191, 20527921]

約数ペア:

[(1, 20527921), (31, 662191), (41, 500681), (521, 39401), (961, 21361), (1271, 16151)]