20818260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115657}}^1$

素因数の和:115672

約数の個数: 36

約数和(自身を含む): 63149268

約数和(自身を除く): 42331008

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115657, 231314, 346971, 462628, 578285, 693942, 1040913, 1156570, 1387884, 1734855, 2081826, 2313140, 3469710, 4163652, 5204565, 6939420, 10409130, 20818260]

約数ペア:

[(1, 20818260), (2, 10409130), (3, 6939420), (4, 5204565), (5, 4163652), (6, 3469710), (9, 2313140), (10, 2081826), (12, 1734855), (15, 1387884), (18, 1156570), (20, 1040913), (30, 693942), (36, 578285), (45, 462628), (60, 346971), (90, 231314), (180, 115657)]