19912130

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{40637}}^1$

素因数の和:40658

約数の個数: 24

約数和(自身を含む): 41694588

約数和(自身を除く): 21782458

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 40637, 81274, 203185, 284459, 406370, 568918, 1422295, 1991213, 2844590, 3982426, 9956065, 19912130]

約数ペア:

[(1, 19912130), (2, 9956065), (5, 3982426), (7, 2844590), (10, 1991213), (14, 1422295), (35, 568918), (49, 406370), (70, 284459), (98, 203185), (245, 81274), (490, 40637)]