20485017

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 37020672

約数和(自身を除く): 16535655

約数列:

[1, 3, 7, 9, 17, 21, 31, 51, 63, 93, 119, 153, 217, 279, 357, 527, 617, 651, 1071, 1581, 1851, 1953, 3689, 4319, 4743, 5553, 10489, 11067, 12957, 19127, 31467, 33201, 38871, 57381, 73423, 94401, 133889, 172143, 220269, 325159, 401667, 660807, 975477, 1205001, 2276113, 2926431, 6828339, 20485017]

約数ペア:

[(1, 20485017), (3, 6828339), (7, 2926431), (9, 2276113), (17, 1205001), (21, 975477), (31, 660807), (51, 401667), (63, 325159), (93, 220269), (119, 172143), (153, 133889), (217, 94401), (279, 73423), (357, 57381), (527, 38871), (617, 33201), (651, 31467), (1071, 19127), (1581, 12957), (1851, 11067), (1953, 10489), (3689, 5553), (4319, 4743)]