21485508

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{1171}}^1$

素因数の和:1328

約数の個数: 48

約数和(自身を含む): 55130880

約数和(自身を除く): 33645372

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132, 139, 278, 417, 556, 834, 1171, 1529, 1668, 2342, 3058, 3513, 4587, 4684, 6116, 7026, 9174, 12881, 14052, 18348, 25762, 38643, 51524, 77286, 154572, 162769, 325538, 488307, 651076, 976614, 1790459, 1953228, 3580918, 5371377, 7161836, 10742754, 21485508]

約数ペア:

[(1, 21485508), (2, 10742754), (3, 7161836), (4, 5371377), (6, 3580918), (11, 1953228), (12, 1790459), (22, 976614), (33, 651076), (44, 488307), (66, 325538), (132, 162769), (139, 154572), (278, 77286), (417, 51524), (556, 38643), (834, 25762), (1171, 18348), (1529, 14052), (1668, 12881), (2342, 9174), (3058, 7026), (3513, 6116), (4587, 4684)]