21097284

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:237

約数の個数: 72

約数和(自身を含む): 54355392

約数和(自身を除く): 33258108

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 101, 103, 156, 169, 202, 206, 303, 309, 338, 404, 412, 507, 606, 618, 676, 1014, 1212, 1236, 1313, 1339, 2028, 2626, 2678, 3939, 4017, 5252, 5356, 7878, 8034, 10403, 15756, 16068, 17069, 17407, 20806, 31209, 34138, 34814, 41612, 51207, 52221, 62418, 68276, 69628, 102414, 104442, 124836, 135239, 204828, 208884, 270478, 405717, 540956, 811434, 1622868, 1758107, 3516214, 5274321, 7032428, 10548642, 21097284]

約数ペア:

[(1, 21097284), (2, 10548642), (3, 7032428), (4, 5274321), (6, 3516214), (12, 1758107), (13, 1622868), (26, 811434), (39, 540956), (52, 405717), (78, 270478), (101, 208884), (103, 204828), (156, 135239), (169, 124836), (202, 104442), (206, 102414), (303, 69628), (309, 68276), (338, 62418), (404, 52221), (412, 51207), (507, 41612), (606, 34814), (618, 34138), (676, 31209), (1014, 20806), (1212, 17407), (1236, 17069), (1313, 16068), (1339, 15756), (2028, 10403), (2626, 8034), (2678, 7878), (3939, 5356), (4017, 5252)]