77921569420

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{809}}^1\times {\mathrm{60961}}^1$

素因数の和:61858

約数の個数: 48

約数和(自身を含む): 165914179200

約数和(自身を除く): 87992609780

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 809, 1580, 1618, 3236, 4045, 8090, 16180, 60961, 63911, 121922, 127822, 243844, 255644, 304805, 319555, 609610, 639110, 1219220, 1278220, 4815919, 9631838, 19263676, 24079595, 48159190, 49317449, 96318380, 98634898, 197269796, 246587245, 493174490, 986348980, 3896078471, 7792156942, 15584313884, 19480392355, 38960784710, 77921569420]

約数ペア:

[(1, 77921569420), (2, 38960784710), (4, 19480392355), (5, 15584313884), (10, 7792156942), (20, 3896078471), (79, 986348980), (158, 493174490), (316, 246587245), (395, 197269796), (790, 98634898), (809, 96318380), (1580, 49317449), (1618, 48159190), (3236, 24079595), (4045, 19263676), (8090, 9631838), (16180, 4815919), (60961, 1278220), (63911, 1219220), (121922, 639110), (127822, 609610), (243844, 319555), (255644, 304805)]