20280316

素因数分解:

$2^2\times 7^2\times {\mathrm{103471}}^1$

素因数の和:103489

約数の個数: 18

約数和(自身を含む): 41285328

約数和(自身を除く): 21005012

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 103471, 206942, 413884, 724297, 1448594, 2897188, 5070079, 10140158, 20280316]

約数ペア:

[(1, 20280316), (2, 10140158), (4, 5070079), (7, 2897188), (14, 1448594), (28, 724297), (49, 413884), (98, 206942), (196, 103471)]