25505137

素因数分解:

$7^3\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:158

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 6635663

約数列:

[1, 7, 23, 49, 53, 61, 161, 343, 371, 427, 1127, 1219, 1403, 2597, 2989, 3233, 7889, 8533, 9821, 18179, 20923, 22631, 59731, 68747, 74359, 158417, 418117, 481229, 520513, 1108919, 3643591, 25505137]

約数ペア:

[(1, 25505137), (7, 3643591), (23, 1108919), (49, 520513), (53, 481229), (61, 418117), (161, 158417), (343, 74359), (371, 68747), (427, 59731), (1127, 22631), (1219, 20923), (1403, 18179), (2597, 9821), (2989, 8533), (3233, 7889)]