4080020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{193}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 9907968

約数和(自身を除く): 5827948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151, 193, 302, 386, 604, 755, 772, 965, 1057, 1351, 1510, 1930, 2114, 2702, 3020, 3860, 4228, 5285, 5404, 6755, 10570, 13510, 21140, 27020, 29143, 58286, 116572, 145715, 204001, 291430, 408002, 582860, 816004, 1020005, 2040010, 4080020]

約数ペア:

[(1, 4080020), (2, 2040010), (4, 1020005), (5, 816004), (7, 582860), (10, 408002), (14, 291430), (20, 204001), (28, 145715), (35, 116572), (70, 58286), (140, 29143), (151, 27020), (193, 21140), (302, 13510), (386, 10570), (604, 6755), (755, 5404), (772, 5285), (965, 4228), (1057, 3860), (1351, 3020), (1510, 2702), (1930, 2114)]