21967519

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{367}}^1\times {\mathrm{503}}^1$

素因数の和:894

約数の個数: 16

約数和(自身を含む): 26707968

約数和(自身を除く): 4740449

約数列:

[1, 7, 17, 119, 367, 503, 2569, 3521, 6239, 8551, 43673, 59857, 184601, 1292207, 3138217, 21967519]

約数ペア:

[(1, 21967519), (7, 3138217), (17, 1292207), (119, 184601), (367, 59857), (503, 43673), (2569, 8551), (3521, 6239)]