257728977

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{757}}^1$

素因数の和:974

約数の個数: 48

約数和(自身を含む): 430422720

約数和(自身を除く): 172693743

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 181, 209, 543, 627, 757, 1629, 1881, 1991, 2271, 3439, 5973, 6813, 8327, 10317, 14383, 17919, 24981, 30951, 37829, 43149, 74943, 113487, 129447, 137017, 158213, 340461, 411051, 474639, 1233153, 1423917, 1507187, 2603323, 4521561, 7809969, 13564683, 23429907, 28636553, 85909659, 257728977]

約数ペア:

[(1, 257728977), (3, 85909659), (9, 28636553), (11, 23429907), (19, 13564683), (33, 7809969), (57, 4521561), (99, 2603323), (171, 1507187), (181, 1423917), (209, 1233153), (543, 474639), (627, 411051), (757, 340461), (1629, 158213), (1881, 137017), (1991, 129447), (2271, 113487), (3439, 74943), (5973, 43149), (6813, 37829), (8327, 30951), (10317, 24981), (14383, 17919)]