15721316

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 31046400

約数和(自身を除く): 15325084

約数列:

[1, 2, 4, 13, 26, 43, 52, 79, 86, 89, 158, 172, 178, 316, 356, 559, 1027, 1118, 1157, 2054, 2236, 2314, 3397, 3827, 4108, 4628, 6794, 7031, 7654, 13588, 14062, 15308, 28124, 44161, 49751, 88322, 91403, 99502, 176644, 182806, 199004, 302333, 365612, 604666, 1209332, 3930329, 7860658, 15721316]

約数ペア:

[(1, 15721316), (2, 7860658), (4, 3930329), (13, 1209332), (26, 604666), (43, 365612), (52, 302333), (79, 199004), (86, 182806), (89, 176644), (158, 99502), (172, 91403), (178, 88322), (316, 49751), (356, 44161), (559, 28124), (1027, 15308), (1118, 14062), (1157, 13588), (2054, 7654), (2236, 7031), (2314, 6794), (3397, 4628), (3827, 4108)]