21298330

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{49531}}^1$

素因数の和:49581

約数の個数: 16

約数和(自身を含む): 39229344

約数和(自身を除く): 17931014

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 49531, 99062, 247655, 495310, 2129833, 4259666, 10649165, 21298330]

約数ペア:

[(1, 21298330), (2, 10649165), (5, 4259666), (10, 2129833), (43, 495310), (86, 247655), (215, 99062), (430, 49531)]