19793991

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{373}}^1$

素因数の和:428

約数の個数: 36

約数和(自身を含む): 32488632

約数和(自身を除く): 12694641

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 361, 373, 399, 931, 1083, 1119, 2527, 2611, 2793, 7087, 7581, 7833, 17689, 18277, 21261, 49609, 53067, 54831, 134653, 148827, 347263, 403959, 942571, 1041789, 2827713, 6597997, 19793991]

約数ペア:

[(1, 19793991), (3, 6597997), (7, 2827713), (19, 1041789), (21, 942571), (49, 403959), (57, 347263), (133, 148827), (147, 134653), (361, 54831), (373, 53067), (399, 49609), (931, 21261), (1083, 18277), (1119, 17689), (2527, 7833), (2611, 7581), (2793, 7087)]