20212020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{112289}}^1$

素因数の和:112304

約数の個数: 36

約数和(自身を含む): 61310340

約数和(自身を除く): 41098320

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 112289, 224578, 336867, 449156, 561445, 673734, 1010601, 1122890, 1347468, 1684335, 2021202, 2245780, 3368670, 4042404, 5053005, 6737340, 10106010, 20212020]

約数ペア:

[(1, 20212020), (2, 10106010), (3, 6737340), (4, 5053005), (5, 4042404), (6, 3368670), (9, 2245780), (10, 2021202), (12, 1684335), (15, 1347468), (18, 1122890), (20, 1010601), (30, 673734), (36, 561445), (45, 449156), (60, 336867), (90, 224578), (180, 112289)]