42028975

素因数分解:

$5^2\times {\mathrm{29}}^2\times {\mathrm{1999}}^1$

素因数の和:2067

約数の個数: 18

約数和(自身を含む): 54002000

約数和(自身を除く): 11973025

約数列:

[1, 5, 25, 29, 145, 725, 841, 1999, 4205, 9995, 21025, 49975, 57971, 289855, 1449275, 1681159, 8405795, 42028975]

約数ペア:

[(1, 42028975), (5, 8405795), (25, 1681159), (29, 1449275), (145, 289855), (725, 57971), (841, 49975), (1999, 21025), (4205, 9995)]