28281708

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:216

約数の個数: 144

約数和(自身を含む): 89893440

約数和(自身を除く): 61611732

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 89, 91, 97, 117, 126, 156, 178, 182, 194, 234, 252, 267, 273, 291, 356, 364, 388, 468, 534, 546, 582, 623, 679, 801, 819, 873, 1068, 1092, 1157, 1164, 1246, 1261, 1358, 1602, 1638, 1746, 1869, 2037, 2314, 2492, 2522, 2716, 3204, 3276, 3471, 3492, 3738, 3783, 4074, 4628, 5044, 5607, 6111, 6942, 7476, 7566, 8099, 8148, 8633, 8827, 10413, 11214, 11349, 12222, 13884, 15132, 16198, 17266, 17654, 20826, 22428, 22698, 24297, 24444, 25899, 26481, 32396, 34532, 35308, 41652, 45396, 48594, 51798, 52962, 60431, 72891, 77697, 79443, 97188, 103596, 105924, 112229, 120862, 145782, 155394, 158886, 181293, 224458, 241724, 291564, 310788, 317772, 336687, 362586, 448916, 543879, 673374, 725172, 785603, 1010061, 1087758, 1346748, 1571206, 2020122, 2175516, 2356809, 3142412, 4040244, 4713618, 7070427, 9427236, 14140854, 28281708]

約数ペア:

[(1, 28281708), (2, 14140854), (3, 9427236), (4, 7070427), (6, 4713618), (7, 4040244), (9, 3142412), (12, 2356809), (13, 2175516), (14, 2020122), (18, 1571206), (21, 1346748), (26, 1087758), (28, 1010061), (36, 785603), (39, 725172), (42, 673374), (52, 543879), (63, 448916), (78, 362586), (84, 336687), (89, 317772), (91, 310788), (97, 291564), (117, 241724), (126, 224458), (156, 181293), (178, 158886), (182, 155394), (194, 145782), (234, 120862), (252, 112229), (267, 105924), (273, 103596), (291, 97188), (356, 79443), (364, 77697), (388, 72891), (468, 60431), (534, 52962), (546, 51798), (582, 48594), (623, 45396), (679, 41652), (801, 35308), (819, 34532), (873, 32396), (1068, 26481), (1092, 25899), (1157, 24444), (1164, 24297), (1246, 22698), (1261, 22428), (1358, 20826), (1602, 17654), (1638, 17266), (1746, 16198), (1869, 15132), (2037, 13884), (2314, 12222), (2492, 11349), (2522, 11214), (2716, 10413), (3204, 8827), (3276, 8633), (3471, 8148), (3492, 8099), (3738, 7566), (3783, 7476), (4074, 6942), (4628, 6111), (5044, 5607)]