21905442

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:432

約数の個数: 72

約数和(自身を含む): 54241200

約数和(自身を除く): 32335758

約数列:

[1, 2, 3, 6, 9, 13, 18, 19, 26, 38, 39, 57, 78, 114, 117, 169, 171, 234, 247, 338, 342, 379, 494, 507, 741, 758, 1014, 1137, 1482, 1521, 2223, 2274, 3042, 3211, 3411, 4446, 4927, 6422, 6822, 7201, 9633, 9854, 14402, 14781, 19266, 21603, 28899, 29562, 43206, 44343, 57798, 64051, 64809, 88686, 93613, 128102, 129618, 187226, 192153, 280839, 384306, 561678, 576459, 842517, 1152918, 1216969, 1685034, 2433938, 3650907, 7301814, 10952721, 21905442]

約数ペア:

[(1, 21905442), (2, 10952721), (3, 7301814), (6, 3650907), (9, 2433938), (13, 1685034), (18, 1216969), (19, 1152918), (26, 842517), (38, 576459), (39, 561678), (57, 384306), (78, 280839), (114, 192153), (117, 187226), (169, 129618), (171, 128102), (234, 93613), (247, 88686), (338, 64809), (342, 64051), (379, 57798), (494, 44343), (507, 43206), (741, 29562), (758, 28899), (1014, 21603), (1137, 19266), (1482, 14781), (1521, 14402), (2223, 9854), (2274, 9633), (3042, 7201), (3211, 6822), (3411, 6422), (4446, 4927)]