19909225

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3923}}^1$

素因数の和:3969

約数の個数: 24

約数和(自身を含む): 29194560

約数和(自身を除く): 9285335

約数列:

[1, 5, 7, 25, 29, 35, 145, 175, 203, 725, 1015, 3923, 5075, 19615, 27461, 98075, 113767, 137305, 568835, 686525, 796369, 2844175, 3981845, 19909225]

約数ペア:

[(1, 19909225), (5, 3981845), (7, 2844175), (25, 796369), (29, 686525), (35, 568835), (145, 137305), (175, 113767), (203, 98075), (725, 27461), (1015, 19615), (3923, 5075)]