19993225

素因数分解:

$5^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{859}}^1$

素因数の和:902

約数の個数: 36

約数和(自身を含む): 30392400

約数和(自身を除く): 10399175

約数列:

[1, 5, 7, 19, 25, 35, 49, 95, 133, 175, 245, 475, 665, 859, 931, 1225, 3325, 4295, 4655, 6013, 16321, 21475, 23275, 30065, 42091, 81605, 114247, 150325, 210455, 408025, 571235, 799729, 1052275, 2856175, 3998645, 19993225]

約数ペア:

[(1, 19993225), (5, 3998645), (7, 2856175), (19, 1052275), (25, 799729), (35, 571235), (49, 408025), (95, 210455), (133, 150325), (175, 114247), (245, 81605), (475, 42091), (665, 30065), (859, 23275), (931, 21475), (1225, 16321), (3325, 6013), (4295, 4655)]