20288975

素因数分解:

$5^2\times 7^1\times {\mathrm{191}}^1\times {\mathrm{607}}^1$

素因数の和:815

約数の個数: 24

約数和(自身を含む): 28950528

約数和(自身を除く): 8661553

約数列:

[1, 5, 7, 25, 35, 175, 191, 607, 955, 1337, 3035, 4249, 4775, 6685, 15175, 21245, 33425, 106225, 115937, 579685, 811559, 2898425, 4057795, 20288975]

約数ペア:

[(1, 20288975), (5, 4057795), (7, 2898425), (25, 811559), (35, 579685), (175, 115937), (191, 106225), (607, 33425), (955, 21245), (1337, 15175), (3035, 6685), (4249, 4775)]