19939325

素因数分解:

$5^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:462

約数の個数: 36

約数和(自身を含む): 29537172

約数和(自身を除く): 9597847

約数列:

[1, 5, 7, 25, 35, 41, 49, 175, 205, 245, 287, 397, 1025, 1225, 1435, 1985, 2009, 2779, 7175, 9925, 10045, 13895, 16277, 19453, 50225, 69475, 81385, 97265, 113939, 406925, 486325, 569695, 797573, 2848475, 3987865, 19939325]

約数ペア:

[(1, 19939325), (5, 3987865), (7, 2848475), (25, 797573), (35, 569695), (41, 486325), (49, 406925), (175, 113939), (205, 97265), (245, 81385), (287, 69475), (397, 50225), (1025, 19453), (1225, 16277), (1435, 13895), (1985, 10045), (2009, 9925), (2779, 7175)]