19873091

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1\times {\mathrm{439}}^1$

素因数の和:698

約数の個数: 16

約数和(自身を含む): 23654400

約数和(自身を除く): 3781309

約数列:

[1, 7, 29, 203, 223, 439, 1561, 3073, 6467, 12731, 45269, 89117, 97897, 685279, 2839013, 19873091]

約数ペア:

[(1, 19873091), (7, 2839013), (29, 685279), (203, 97897), (223, 89117), (439, 45269), (1561, 12731), (3073, 6467)]