21407148

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:316

約数の個数: 144

約数和(自身を含む): 69189120

約数和(自身を除く): 47781972

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 19, 21, 28, 34, 36, 38, 42, 51, 57, 63, 68, 76, 84, 102, 114, 119, 126, 133, 153, 171, 204, 228, 238, 252, 263, 266, 306, 323, 342, 357, 399, 476, 526, 532, 612, 646, 684, 714, 789, 798, 969, 1052, 1071, 1197, 1292, 1428, 1578, 1596, 1841, 1938, 2142, 2261, 2367, 2394, 2907, 3156, 3682, 3876, 4284, 4471, 4522, 4734, 4788, 4997, 5523, 5814, 6783, 7364, 8942, 9044, 9468, 9994, 11046, 11628, 13413, 13566, 14991, 16569, 17884, 19988, 20349, 22092, 26826, 27132, 29982, 31297, 33138, 34979, 40239, 40698, 44973, 53652, 59964, 62594, 66276, 69958, 80478, 81396, 84949, 89946, 93891, 104937, 125188, 139916, 160956, 169898, 179892, 187782, 209874, 254847, 281673, 314811, 339796, 375564, 419748, 509694, 563346, 594643, 629622, 764541, 1019388, 1126692, 1189286, 1259244, 1529082, 1783929, 2378572, 3058164, 3567858, 5351787, 7135716, 10703574, 21407148]

約数ペア:

[(1, 21407148), (2, 10703574), (3, 7135716), (4, 5351787), (6, 3567858), (7, 3058164), (9, 2378572), (12, 1783929), (14, 1529082), (17, 1259244), (18, 1189286), (19, 1126692), (21, 1019388), (28, 764541), (34, 629622), (36, 594643), (38, 563346), (42, 509694), (51, 419748), (57, 375564), (63, 339796), (68, 314811), (76, 281673), (84, 254847), (102, 209874), (114, 187782), (119, 179892), (126, 169898), (133, 160956), (153, 139916), (171, 125188), (204, 104937), (228, 93891), (238, 89946), (252, 84949), (263, 81396), (266, 80478), (306, 69958), (323, 66276), (342, 62594), (357, 59964), (399, 53652), (476, 44973), (526, 40698), (532, 40239), (612, 34979), (646, 33138), (684, 31297), (714, 29982), (789, 27132), (798, 26826), (969, 22092), (1052, 20349), (1071, 19988), (1197, 17884), (1292, 16569), (1428, 14991), (1578, 13566), (1596, 13413), (1841, 11628), (1938, 11046), (2142, 9994), (2261, 9468), (2367, 9044), (2394, 8942), (2907, 7364), (3156, 6783), (3682, 5814), (3876, 5523), (4284, 4997), (4471, 4788), (4522, 4734)]