261286400

素因数分解:

$2^9\times 5^2\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:314

約数の個数: 120

約数和(自身を含む): 656459100

約数和(自身を除く): 395172700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 137, 149, 160, 200, 256, 274, 298, 320, 400, 512, 548, 596, 640, 685, 745, 800, 1096, 1192, 1280, 1370, 1490, 1600, 2192, 2384, 2560, 2740, 2980, 3200, 3425, 3725, 4384, 4768, 5480, 5960, 6400, 6850, 7450, 8768, 9536, 10960, 11920, 12800, 13700, 14900, 17536, 19072, 20413, 21920, 23840, 27400, 29800, 35072, 38144, 40826, 43840, 47680, 54800, 59600, 70144, 76288, 81652, 87680, 95360, 102065, 109600, 119200, 163304, 175360, 190720, 204130, 219200, 238400, 326608, 350720, 381440, 408260, 438400, 476800, 510325, 653216, 816520, 876800, 953600, 1020650, 1306432, 1633040, 1753600, 1907200, 2041300, 2612864, 3266080, 4082600, 5225728, 6532160, 8165200, 10451456, 13064320, 16330400, 26128640, 32660800, 52257280, 65321600, 130643200, 261286400]

約数ペア:

[(1, 261286400), (2, 130643200), (4, 65321600), (5, 52257280), (8, 32660800), (10, 26128640), (16, 16330400), (20, 13064320), (25, 10451456), (32, 8165200), (40, 6532160), (50, 5225728), (64, 4082600), (80, 3266080), (100, 2612864), (128, 2041300), (137, 1907200), (149, 1753600), (160, 1633040), (200, 1306432), (256, 1020650), (274, 953600), (298, 876800), (320, 816520), (400, 653216), (512, 510325), (548, 476800), (596, 438400), (640, 408260), (685, 381440), (745, 350720), (800, 326608), (1096, 238400), (1192, 219200), (1280, 204130), (1370, 190720), (1490, 175360), (1600, 163304), (2192, 119200), (2384, 109600), (2560, 102065), (2740, 95360), (2980, 87680), (3200, 81652), (3425, 76288), (3725, 70144), (4384, 59600), (4768, 54800), (5480, 47680), (5960, 43840), (6400, 40826), (6850, 38144), (7450, 35072), (8768, 29800), (9536, 27400), (10960, 23840), (11920, 21920), (12800, 20413), (13700, 19072), (14900, 17536)]