640253740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{97303}}^1$

素因数の和:97366

約数の個数: 48

約数和(自身を含む): 1569318912

約数和(自身を除く): 929065172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3290, 6580, 97303, 194606, 389212, 486515, 681121, 973030, 1362242, 1946060, 2724484, 3405605, 4573241, 6811210, 9146482, 13622420, 18292964, 22866205, 32012687, 45732410, 64025374, 91464820, 128050748, 160063435, 320126870, 640253740]

約数ペア:

[(1, 640253740), (2, 320126870), (4, 160063435), (5, 128050748), (7, 91464820), (10, 64025374), (14, 45732410), (20, 32012687), (28, 22866205), (35, 18292964), (47, 13622420), (70, 9146482), (94, 6811210), (140, 4573241), (188, 3405605), (235, 2724484), (329, 1946060), (470, 1362242), (658, 973030), (940, 681121), (1316, 486515), (1645, 389212), (3290, 194606), (6580, 97303)]