1278702920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2906143}}^1$

素因数の和:2906165

約数の個数: 32

約数和(自身を含む): 3138635520

約数和(自身を除く): 1859932600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 2906143, 5812286, 11624572, 14530715, 23249144, 29061430, 31967573, 58122860, 63935146, 116245720, 127870292, 159837865, 255740584, 319675730, 639351460, 1278702920]

約数ペア:

[(1, 1278702920), (2, 639351460), (4, 319675730), (5, 255740584), (8, 159837865), (10, 127870292), (11, 116245720), (20, 63935146), (22, 58122860), (40, 31967573), (44, 29061430), (55, 23249144), (88, 14530715), (110, 11624572), (220, 5812286), (440, 2906143)]