257661660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{2861}}^1$

素因数の和:2971

約数の個数: 96

約数和(自身を含む): 769305600

約数和(自身を除く): 511643940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 79, 95, 114, 158, 190, 228, 237, 285, 316, 380, 395, 474, 570, 790, 948, 1140, 1185, 1501, 1580, 2370, 2861, 3002, 4503, 4740, 5722, 6004, 7505, 8583, 9006, 11444, 14305, 15010, 17166, 18012, 22515, 28610, 30020, 34332, 42915, 45030, 54359, 57220, 85830, 90060, 108718, 163077, 171660, 217436, 226019, 271795, 326154, 452038, 543590, 652308, 678057, 815385, 904076, 1087180, 1130095, 1356114, 1630770, 2260190, 2712228, 3261540, 3390285, 4294361, 4520380, 6780570, 8588722, 12883083, 13561140, 17177444, 21471805, 25766166, 42943610, 51532332, 64415415, 85887220, 128830830, 257661660]

約数ペア:

[(1, 257661660), (2, 128830830), (3, 85887220), (4, 64415415), (5, 51532332), (6, 42943610), (10, 25766166), (12, 21471805), (15, 17177444), (19, 13561140), (20, 12883083), (30, 8588722), (38, 6780570), (57, 4520380), (60, 4294361), (76, 3390285), (79, 3261540), (95, 2712228), (114, 2260190), (158, 1630770), (190, 1356114), (228, 1130095), (237, 1087180), (285, 904076), (316, 815385), (380, 678057), (395, 652308), (474, 543590), (570, 452038), (790, 326154), (948, 271795), (1140, 226019), (1185, 217436), (1501, 171660), (1580, 163077), (2370, 108718), (2861, 90060), (3002, 85830), (4503, 57220), (4740, 54359), (5722, 45030), (6004, 42915), (7505, 34332), (8583, 30020), (9006, 28610), (11444, 22515), (14305, 18012), (15010, 17166)]