21286508

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{269}}^1\times {\mathrm{271}}^1$

素因数の和:617

約数の個数: 24

約数和(自身を含む): 38041920

約数和(自身を除く): 16755412

約数列:

[1, 2, 4, 73, 146, 269, 271, 292, 538, 542, 1076, 1084, 19637, 19783, 39274, 39566, 72899, 78548, 79132, 145798, 291596, 5321627, 10643254, 21286508]

約数ペア:

[(1, 21286508), (2, 10643254), (4, 5321627), (73, 291596), (146, 145798), (269, 79132), (271, 78548), (292, 72899), (538, 39566), (542, 39274), (1076, 19783), (1084, 19637)]