20263660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{557}}^1$

素因数の和:690

約数の個数: 48

約数和(自身を含む): 45559584

約数和(自身を除く): 25295924

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 107, 170, 214, 340, 428, 535, 557, 1070, 1114, 1819, 2140, 2228, 2785, 3638, 5570, 7276, 9095, 9469, 11140, 18190, 18938, 36380, 37876, 47345, 59599, 94690, 119198, 189380, 238396, 297995, 595990, 1013183, 1191980, 2026366, 4052732, 5065915, 10131830, 20263660]

約数ペア:

[(1, 20263660), (2, 10131830), (4, 5065915), (5, 4052732), (10, 2026366), (17, 1191980), (20, 1013183), (34, 595990), (68, 297995), (85, 238396), (107, 189380), (170, 119198), (214, 94690), (340, 59599), (428, 47345), (535, 37876), (557, 36380), (1070, 18938), (1114, 18190), (1819, 11140), (2140, 9469), (2228, 9095), (2785, 7276), (3638, 5570)]