21000916521

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2601377}}^1$

素因数の和:2601422

約数の個数: 32

約数和(自身を含む): 34962520320

約数和(自身を除く): 13961603799

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 117, 207, 299, 351, 621, 897, 2691, 8073, 2601377, 7804131, 23412393, 33817901, 59831671, 70237179, 101453703, 179495013, 304361109, 538485039, 777811723, 913083327, 1615455117, 2333435169, 7000305507, 21000916521]

約数ペア:

[(1, 21000916521), (3, 7000305507), (9, 2333435169), (13, 1615455117), (23, 913083327), (27, 777811723), (39, 538485039), (69, 304361109), (117, 179495013), (207, 101453703), (299, 70237179), (351, 59831671), (621, 33817901), (897, 23412393), (2691, 7804131), (8073, 2601377)]