19977524

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{463}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 42405888

約数和(自身を除く): 22428364

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 67, 92, 134, 161, 268, 322, 463, 469, 644, 926, 938, 1541, 1852, 1876, 3082, 3241, 6164, 6482, 10649, 10787, 12964, 21298, 21574, 31021, 42596, 43148, 62042, 74543, 124084, 149086, 217147, 298172, 434294, 713483, 868588, 1426966, 2853932, 4994381, 9988762, 19977524]

約数ペア:

[(1, 19977524), (2, 9988762), (4, 4994381), (7, 2853932), (14, 1426966), (23, 868588), (28, 713483), (46, 434294), (67, 298172), (92, 217147), (134, 149086), (161, 124084), (268, 74543), (322, 62042), (463, 43148), (469, 42596), (644, 31021), (926, 21574), (938, 21298), (1541, 12964), (1852, 10787), (1876, 10649), (3082, 6482), (3241, 6164)]