20629048

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 43139880

約数和(自身を除く): 22510832

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 101, 121, 202, 211, 242, 404, 422, 484, 808, 844, 968, 1111, 1688, 2222, 2321, 4444, 4642, 8888, 9284, 12221, 18568, 21311, 24442, 25531, 42622, 48884, 51062, 85244, 97768, 102124, 170488, 204248, 234421, 468842, 937684, 1875368, 2578631, 5157262, 10314524, 20629048]

約数ペア:

[(1, 20629048), (2, 10314524), (4, 5157262), (8, 2578631), (11, 1875368), (22, 937684), (44, 468842), (88, 234421), (101, 204248), (121, 170488), (202, 102124), (211, 97768), (242, 85244), (404, 51062), (422, 48884), (484, 42622), (808, 25531), (844, 24442), (968, 21311), (1111, 18568), (1688, 12221), (2222, 9284), (2321, 8888), (4444, 4642)]