20019425

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{521}}^1$

素因数の和:613

約数の個数: 24

約数和(自身を含む): 26214840

約数和(自身を除く): 6195415

約数列:

[1, 5, 25, 29, 53, 145, 265, 521, 725, 1325, 1537, 2605, 7685, 13025, 15109, 27613, 38425, 75545, 138065, 377725, 690325, 800777, 4003885, 20019425]

約数ペア:

[(1, 20019425), (5, 4003885), (25, 800777), (29, 690325), (53, 377725), (145, 138065), (265, 75545), (521, 38425), (725, 27613), (1325, 15109), (1537, 13025), (2605, 7685)]