21389287

素因数分解:

${\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{229}}^1$

素因数の和:414

約数の個数: 16

約数和(自身を含む): 23316480

約数和(自身を除く): 1927193

約数列:

[1, 23, 31, 131, 229, 713, 3013, 4061, 5267, 7099, 29999, 93403, 163277, 689977, 929969, 21389287]

約数ペア:

[(1, 21389287), (23, 929969), (31, 689977), (131, 163277), (229, 93403), (713, 29999), (3013, 7099), (4061, 5267)]