20777960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10601}}^1$

素因数の和:10626

約数の個数: 48

約数和(自身を含む): 54388260

約数和(自身を除く): 33610300

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10601, 21202, 42404, 53005, 74207, 84808, 106010, 148414, 212020, 296828, 371035, 424040, 519449, 593656, 742070, 1038898, 1484140, 2077796, 2597245, 2968280, 4155592, 5194490, 10388980, 20777960]

約数ペア:

[(1, 20777960), (2, 10388980), (4, 5194490), (5, 4155592), (7, 2968280), (8, 2597245), (10, 2077796), (14, 1484140), (20, 1038898), (28, 742070), (35, 593656), (40, 519449), (49, 424040), (56, 371035), (70, 296828), (98, 212020), (140, 148414), (196, 106010), (245, 84808), (280, 74207), (392, 53005), (490, 42404), (980, 21202), (1960, 10601)]