21000391744

素因数分解:

$2^6\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{208073}}^1$

素因数の和:208187

約数の個数: 56

約数和(自身を含む): 44394668640

約数和(自身を除く): 23394276896

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 83, 152, 166, 304, 332, 608, 664, 1216, 1328, 1577, 2656, 3154, 5312, 6308, 12616, 25232, 50464, 100928, 208073, 416146, 832292, 1664584, 3329168, 3953387, 6658336, 7906774, 13316672, 15813548, 17270059, 31627096, 34540118, 63254192, 69080236, 126508384, 138160472, 253016768, 276320944, 328131121, 552641888, 656262242, 1105283776, 1312524484, 2625048968, 5250097936, 10500195872, 21000391744]

約数ペア:

[(1, 21000391744), (2, 10500195872), (4, 5250097936), (8, 2625048968), (16, 1312524484), (19, 1105283776), (32, 656262242), (38, 552641888), (64, 328131121), (76, 276320944), (83, 253016768), (152, 138160472), (166, 126508384), (304, 69080236), (332, 63254192), (608, 34540118), (664, 31627096), (1216, 17270059), (1328, 15813548), (1577, 13316672), (2656, 7906774), (3154, 6658336), (5312, 3953387), (6308, 3329168), (12616, 1664584), (25232, 832292), (50464, 416146), (100928, 208073)]