21895083

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:185

約数の個数: 64

約数和(自身を含む): 39690240

約数和(自身を除く): 17795157

約数列:

[1, 3, 7, 9, 21, 27, 31, 37, 63, 93, 101, 111, 189, 217, 259, 279, 303, 333, 651, 707, 777, 837, 909, 999, 1147, 1953, 2121, 2331, 2727, 3131, 3441, 3737, 5859, 6363, 6993, 8029, 9393, 10323, 11211, 19089, 21917, 24087, 26159, 28179, 30969, 33633, 65751, 72261, 78477, 84537, 100899, 115847, 197253, 216783, 235431, 347541, 591759, 706293, 810929, 1042623, 2432787, 3127869, 7298361, 21895083]

約数ペア:

[(1, 21895083), (3, 7298361), (7, 3127869), (9, 2432787), (21, 1042623), (27, 810929), (31, 706293), (37, 591759), (63, 347541), (93, 235431), (101, 216783), (111, 197253), (189, 115847), (217, 100899), (259, 84537), (279, 78477), (303, 72261), (333, 65751), (651, 33633), (707, 30969), (777, 28179), (837, 26159), (909, 24087), (999, 21917), (1147, 19089), (1953, 11211), (2121, 10323), (2331, 9393), (2727, 8029), (3131, 6993), (3441, 6363), (3737, 5859)]