28509117

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{277}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 48839040

約数和(自身を除く): 20329923

約数列:

[1, 3, 7, 13, 21, 29, 39, 87, 91, 169, 203, 273, 277, 377, 507, 609, 831, 1131, 1183, 1939, 2639, 3549, 3601, 4901, 5817, 7917, 8033, 10803, 14703, 24099, 25207, 34307, 46813, 56231, 75621, 102921, 104429, 140439, 168693, 313287, 327691, 731003, 983073, 1357577, 2193009, 4072731, 9503039, 28509117]

約数ペア:

[(1, 28509117), (3, 9503039), (7, 4072731), (13, 2193009), (21, 1357577), (29, 983073), (39, 731003), (87, 327691), (91, 313287), (169, 168693), (203, 140439), (273, 104429), (277, 102921), (377, 75621), (507, 56231), (609, 46813), (831, 34307), (1131, 25207), (1183, 24099), (1939, 14703), (2639, 10803), (3549, 8033), (3601, 7917), (4901, 5817)]