21260943

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 35942400

約数和(自身を除く): 14681457

約数列:

[1, 3, 9, 11, 19, 33, 57, 89, 99, 127, 171, 209, 267, 381, 627, 801, 979, 1143, 1397, 1691, 1881, 2413, 2937, 4191, 5073, 7239, 8811, 11303, 12573, 15219, 18601, 21717, 26543, 33909, 55803, 79629, 101727, 124333, 167409, 214757, 238887, 372999, 644271, 1118997, 1932813, 2362327, 7086981, 21260943]

約数ペア:

[(1, 21260943), (3, 7086981), (9, 2362327), (11, 1932813), (19, 1118997), (33, 644271), (57, 372999), (89, 238887), (99, 214757), (127, 167409), (171, 124333), (209, 101727), (267, 79629), (381, 55803), (627, 33909), (801, 26543), (979, 21717), (1143, 18601), (1397, 15219), (1691, 12573), (1881, 11303), (2413, 8811), (2937, 7239), (4191, 5073)]