21180042

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:229

約数の個数: 80

約数和(自身を含む): 52141320

約数和(自身を除く): 30961278

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 81, 89, 113, 117, 162, 178, 226, 234, 267, 339, 351, 534, 678, 702, 801, 1017, 1053, 1157, 1469, 1602, 2034, 2106, 2314, 2403, 2938, 3051, 3471, 4407, 4806, 6102, 6942, 7209, 8814, 9153, 10057, 10413, 13221, 14418, 18306, 20114, 20826, 26442, 30171, 31239, 39663, 60342, 62478, 79326, 90513, 93717, 118989, 130741, 181026, 187434, 237978, 261482, 271539, 392223, 543078, 784446, 814617, 1176669, 1629234, 2353338, 3530007, 7060014, 10590021, 21180042]

約数ペア:

[(1, 21180042), (2, 10590021), (3, 7060014), (6, 3530007), (9, 2353338), (13, 1629234), (18, 1176669), (26, 814617), (27, 784446), (39, 543078), (54, 392223), (78, 271539), (81, 261482), (89, 237978), (113, 187434), (117, 181026), (162, 130741), (178, 118989), (226, 93717), (234, 90513), (267, 79326), (339, 62478), (351, 60342), (534, 39663), (678, 31239), (702, 30171), (801, 26442), (1017, 20826), (1053, 20114), (1157, 18306), (1469, 14418), (1602, 13221), (2034, 10413), (2106, 10057), (2314, 9153), (2403, 8814), (2938, 7209), (3051, 6942), (3471, 6102), (4407, 4806)]