25807131

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 44478720

約数和(自身を除く): 18671589

約数列:

[1, 3, 7, 9, 21, 53, 59, 63, 131, 159, 177, 371, 393, 413, 477, 531, 917, 1113, 1179, 1239, 2751, 3127, 3339, 3717, 6943, 7729, 8253, 9381, 20829, 21889, 23187, 28143, 48601, 54103, 62487, 65667, 69561, 145803, 162309, 197001, 409637, 437409, 486927, 1228911, 2867459, 3686733, 8602377, 25807131]

約数ペア:

[(1, 25807131), (3, 8602377), (7, 3686733), (9, 2867459), (21, 1228911), (53, 486927), (59, 437409), (63, 409637), (131, 197001), (159, 162309), (177, 145803), (371, 69561), (393, 65667), (413, 62487), (477, 54103), (531, 48601), (917, 28143), (1113, 23187), (1179, 21889), (1239, 20829), (2751, 9381), (3127, 8253), (3339, 7729), (3717, 6943)]