21561660

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{39929}}^1$

素因数の和:39947

約数の個数: 48

約数和(自身を含む): 67082400

約数和(自身を除く): 45520740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 39929, 79858, 119787, 159716, 199645, 239574, 359361, 399290, 479148, 598935, 718722, 798580, 1078083, 1197870, 1437444, 1796805, 2156166, 2395740, 3593610, 4312332, 5390415, 7187220, 10780830, 21561660]

約数ペア:

[(1, 21561660), (2, 10780830), (3, 7187220), (4, 5390415), (5, 4312332), (6, 3593610), (9, 2395740), (10, 2156166), (12, 1796805), (15, 1437444), (18, 1197870), (20, 1078083), (27, 798580), (30, 718722), (36, 598935), (45, 479148), (54, 399290), (60, 359361), (90, 239574), (108, 199645), (135, 159716), (180, 119787), (270, 79858), (540, 39929)]