21623539

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:287

約数の個数: 24

約数和(自身を含む): 26822400

約数和(自身を除く): 5198861

約数列:

[1, 7, 19, 43, 133, 199, 301, 361, 817, 1393, 2527, 3781, 5719, 8557, 15523, 26467, 59899, 71839, 108661, 162583, 502873, 1138081, 3089077, 21623539]

約数ペア:

[(1, 21623539), (7, 3089077), (19, 1138081), (43, 502873), (133, 162583), (199, 108661), (301, 71839), (361, 59899), (817, 26467), (1393, 15523), (2527, 8557), (3781, 5719)]