20771883

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 35817600

約数和(自身を除く): 15045717

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 81, 99, 171, 209, 243, 297, 409, 513, 627, 891, 1227, 1539, 1881, 2673, 3681, 4499, 4617, 5643, 7771, 11043, 13497, 16929, 23313, 33129, 40491, 50787, 69939, 85481, 99387, 121473, 209817, 256443, 364419, 629451, 769329, 1093257, 1888353, 2307987, 6923961, 20771883]

約数ペア:

[(1, 20771883), (3, 6923961), (9, 2307987), (11, 1888353), (19, 1093257), (27, 769329), (33, 629451), (57, 364419), (81, 256443), (99, 209817), (171, 121473), (209, 99387), (243, 85481), (297, 69939), (409, 50787), (513, 40491), (627, 33129), (891, 23313), (1227, 16929), (1539, 13497), (1881, 11043), (2673, 7771), (3681, 5643), (4499, 4617)]