20101521

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{179}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 10380399

約数列:

[1, 3, 11, 33, 41, 83, 123, 179, 249, 451, 537, 913, 1353, 1969, 2739, 3403, 5907, 7339, 10209, 14857, 22017, 37433, 44571, 80729, 112299, 163427, 242187, 490281, 609137, 1827411, 6700507, 20101521]

約数ペア:

[(1, 20101521), (3, 6700507), (11, 1827411), (33, 609137), (41, 490281), (83, 242187), (123, 163427), (179, 112299), (249, 80729), (451, 44571), (537, 37433), (913, 22017), (1353, 14857), (1969, 10209), (2739, 7339), (3403, 5907)]