243750400

素因数分解:

$2^9\times 5^2\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:304

約数の個数: 120

約数和(自身を含む): 612695160

約数和(自身を除く): 368944760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 137, 139, 160, 200, 256, 274, 278, 320, 400, 512, 548, 556, 640, 685, 695, 800, 1096, 1112, 1280, 1370, 1390, 1600, 2192, 2224, 2560, 2740, 2780, 3200, 3425, 3475, 4384, 4448, 5480, 5560, 6400, 6850, 6950, 8768, 8896, 10960, 11120, 12800, 13700, 13900, 17536, 17792, 19043, 21920, 22240, 27400, 27800, 35072, 35584, 38086, 43840, 44480, 54800, 55600, 70144, 71168, 76172, 87680, 88960, 95215, 109600, 111200, 152344, 175360, 177920, 190430, 219200, 222400, 304688, 350720, 355840, 380860, 438400, 444800, 476075, 609376, 761720, 876800, 889600, 952150, 1218752, 1523440, 1753600, 1779200, 1904300, 2437504, 3046880, 3808600, 4875008, 6093760, 7617200, 9750016, 12187520, 15234400, 24375040, 30468800, 48750080, 60937600, 121875200, 243750400]

約数ペア:

[(1, 243750400), (2, 121875200), (4, 60937600), (5, 48750080), (8, 30468800), (10, 24375040), (16, 15234400), (20, 12187520), (25, 9750016), (32, 7617200), (40, 6093760), (50, 4875008), (64, 3808600), (80, 3046880), (100, 2437504), (128, 1904300), (137, 1779200), (139, 1753600), (160, 1523440), (200, 1218752), (256, 952150), (274, 889600), (278, 876800), (320, 761720), (400, 609376), (512, 476075), (548, 444800), (556, 438400), (640, 380860), (685, 355840), (695, 350720), (800, 304688), (1096, 222400), (1112, 219200), (1280, 190430), (1370, 177920), (1390, 175360), (1600, 152344), (2192, 111200), (2224, 109600), (2560, 95215), (2740, 88960), (2780, 87680), (3200, 76172), (3425, 71168), (3475, 70144), (4384, 55600), (4448, 54800), (5480, 44480), (5560, 43840), (6400, 38086), (6850, 35584), (6950, 35072), (8768, 27800), (8896, 27400), (10960, 22240), (11120, 21920), (12800, 19043), (13700, 17792), (13900, 17536)]