31100020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{1151}}^1$

素因数の和:1360

約数の個数: 48

約数和(自身を含む): 75091968

約数和(自身を除く): 43991948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 193, 386, 772, 965, 1151, 1351, 1930, 2302, 2702, 3860, 4604, 5404, 5755, 6755, 8057, 11510, 13510, 16114, 23020, 27020, 32228, 40285, 80570, 161140, 222143, 444286, 888572, 1110715, 1555001, 2221430, 3110002, 4442860, 6220004, 7775005, 15550010, 31100020]

約数ペア:

[(1, 31100020), (2, 15550010), (4, 7775005), (5, 6220004), (7, 4442860), (10, 3110002), (14, 2221430), (20, 1555001), (28, 1110715), (35, 888572), (70, 444286), (140, 222143), (193, 161140), (386, 80570), (772, 40285), (965, 32228), (1151, 27020), (1351, 23020), (1930, 16114), (2302, 13510), (2702, 11510), (3860, 8057), (4604, 6755), (5404, 5755)]