311915331

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1327}}^1$

素因数の和:1401

約数の個数: 72

約数和(自身を含む): 578620224

約数和(自身を除く): 266704893

約数列:

[1, 3, 7, 9, 13, 21, 39, 41, 49, 63, 91, 117, 123, 147, 273, 287, 369, 441, 533, 637, 819, 861, 1327, 1599, 1911, 2009, 2583, 3731, 3981, 4797, 5733, 6027, 9289, 11193, 11943, 17251, 18081, 26117, 27867, 33579, 51753, 54407, 65023, 78351, 83601, 120757, 155259, 163221, 195069, 235053, 362271, 380849, 489663, 585207, 707291, 845299, 1086813, 1142547, 2121873, 2535897, 2665943, 3427641, 4951037, 6365619, 7607691, 7997829, 14853111, 23993487, 34657259, 44559333, 103971777, 311915331]

約数ペア:

[(1, 311915331), (3, 103971777), (7, 44559333), (9, 34657259), (13, 23993487), (21, 14853111), (39, 7997829), (41, 7607691), (49, 6365619), (63, 4951037), (91, 3427641), (117, 2665943), (123, 2535897), (147, 2121873), (273, 1142547), (287, 1086813), (369, 845299), (441, 707291), (533, 585207), (637, 489663), (819, 380849), (861, 362271), (1327, 235053), (1599, 195069), (1911, 163221), (2009, 155259), (2583, 120757), (3731, 83601), (3981, 78351), (4797, 65023), (5733, 54407), (6027, 51753), (9289, 33579), (11193, 27867), (11943, 26117), (17251, 18081)]