19303388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 38031840

約数和(自身を除く): 18728452

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 89, 97, 172, 178, 194, 356, 388, 559, 1118, 1157, 1261, 2236, 2314, 2522, 3827, 4171, 4628, 5044, 7654, 8342, 8633, 15308, 16684, 17266, 34532, 49751, 54223, 99502, 108446, 112229, 199004, 216892, 224458, 371219, 448916, 742438, 1484876, 4825847, 9651694, 19303388]

約数ペア:

[(1, 19303388), (2, 9651694), (4, 4825847), (13, 1484876), (26, 742438), (43, 448916), (52, 371219), (86, 224458), (89, 216892), (97, 199004), (172, 112229), (178, 108446), (194, 99502), (356, 54223), (388, 49751), (559, 34532), (1118, 17266), (1157, 16684), (1261, 15308), (2236, 8633), (2314, 8342), (2522, 7654), (3827, 5044), (4171, 4628)]