19121809

素因数分解:

$7^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:122

約数の個数: 36

約数和(自身を含む): 25017984

約数和(自身を除く): 5896175

約数列:

[1, 7, 19, 23, 47, 49, 133, 161, 329, 361, 437, 893, 931, 1081, 1127, 2303, 2527, 3059, 6251, 7567, 8303, 16967, 17689, 20539, 21413, 43757, 52969, 58121, 118769, 143773, 390241, 406847, 831383, 1006411, 2731687, 19121809]

約数ペア:

[(1, 19121809), (7, 2731687), (19, 1006411), (23, 831383), (47, 406847), (49, 390241), (133, 143773), (161, 118769), (329, 58121), (361, 52969), (437, 43757), (893, 21413), (931, 20539), (1081, 17689), (1127, 16967), (2303, 8303), (2527, 7567), (3059, 6251)]