81376520

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1$

素因数の和:414

約数の個数: 64

約数和(自身を含む): 187729920

約数和(自身を除く): 106353400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 127, 166, 193, 254, 332, 386, 415, 508, 635, 664, 772, 830, 965, 1016, 1270, 1544, 1660, 1930, 2540, 3320, 3860, 5080, 7720, 10541, 16019, 21082, 24511, 32038, 42164, 49022, 52705, 64076, 80095, 84328, 98044, 105410, 122555, 128152, 160190, 196088, 210820, 245110, 320380, 421640, 490220, 640760, 980440, 2034413, 4068826, 8137652, 10172065, 16275304, 20344130, 40688260, 81376520]

約数ペア:

[(1, 81376520), (2, 40688260), (4, 20344130), (5, 16275304), (8, 10172065), (10, 8137652), (20, 4068826), (40, 2034413), (83, 980440), (127, 640760), (166, 490220), (193, 421640), (254, 320380), (332, 245110), (386, 210820), (415, 196088), (508, 160190), (635, 128152), (664, 122555), (772, 105410), (830, 98044), (965, 84328), (1016, 80095), (1270, 64076), (1544, 52705), (1660, 49022), (1930, 42164), (2540, 32038), (3320, 24511), (3860, 21082), (5080, 16019), (7720, 10541)]