19539160

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{739}}^1$

素因数の和:1411

約数の個数: 32

約数和(自身を含む): 44089200

約数和(自身を除く): 24550040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 739, 1322, 1478, 2644, 2956, 3305, 3695, 5288, 5912, 6610, 7390, 13220, 14780, 26440, 29560, 488479, 976958, 1953916, 2442395, 3907832, 4884790, 9769580, 19539160]

約数ペア:

[(1, 19539160), (2, 9769580), (4, 4884790), (5, 3907832), (8, 2442395), (10, 1953916), (20, 976958), (40, 488479), (661, 29560), (739, 26440), (1322, 14780), (1478, 13220), (2644, 7390), (2956, 6610), (3305, 5912), (3695, 5288)]