20580819

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51581}}^1$

素因数の和:51610

約数の個数: 16

約数和(自身を含む): 33012480

約数和(自身を除く): 12431661

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51581, 154743, 361067, 980039, 1083201, 2940117, 6860273, 20580819]

約数ペア:

[(1, 20580819), (3, 6860273), (7, 2940117), (19, 1083201), (21, 980039), (57, 361067), (133, 154743), (399, 51581)]