7278920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:326

約数の個数: 64

約数和(自身を含む): 18195840

約数和(自身を除く): 10916920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 233, 284, 355, 440, 466, 568, 710, 781, 932, 1165, 1420, 1562, 1864, 2330, 2563, 2840, 3124, 3905, 4660, 5126, 6248, 7810, 9320, 10252, 12815, 15620, 16543, 20504, 25630, 31240, 33086, 51260, 66172, 82715, 102520, 132344, 165430, 181973, 330860, 363946, 661720, 727892, 909865, 1455784, 1819730, 3639460, 7278920]

約数ペア:

[(1, 7278920), (2, 3639460), (4, 1819730), (5, 1455784), (8, 909865), (10, 727892), (11, 661720), (20, 363946), (22, 330860), (40, 181973), (44, 165430), (55, 132344), (71, 102520), (88, 82715), (110, 66172), (142, 51260), (220, 33086), (233, 31240), (284, 25630), (355, 20504), (440, 16543), (466, 15620), (568, 12815), (710, 10252), (781, 9320), (932, 7810), (1165, 6248), (1420, 5126), (1562, 4660), (1864, 3905), (2330, 3124), (2563, 2840)]