25156720001

素因数分解:

$7^4\times {\mathrm{2969}}^1\times {\mathrm{3529}}^1$

素因数の和:6526

約数の個数: 20

約数和(自身を含む): 29365964100

約数和(自身を除く): 4209244099

約数列:

[1, 7, 49, 343, 2401, 2969, 3529, 20783, 24703, 145481, 172921, 1018367, 1210447, 7128569, 8473129, 10477601, 73343207, 513402449, 3593817143, 25156720001]

約数ペア:

[(1, 25156720001), (7, 3593817143), (49, 513402449), (343, 73343207), (2401, 10477601), (2969, 8473129), (3529, 7128569), (20783, 1210447), (24703, 1018367), (145481, 172921)]