21080283

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{13751}}^1$

素因数の和:13834

約数の個数: 16

約数和(自身を含む): 32564736

約数和(自身を除く): 11484453

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 13751, 41253, 96257, 288771, 1003823, 3011469, 7026761, 21080283]

約数ペア:

[(1, 21080283), (3, 7026761), (7, 3011469), (21, 1003823), (73, 288771), (219, 96257), (511, 41253), (1533, 13751)]