81204725

素因数分解:

$5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{7607}}^1$

素因数の和:7685

約数の個数: 24

約数和(自身を含む): 116980608

約数和(自身を除く): 35775883

約数列:

[1, 5, 7, 25, 35, 61, 175, 305, 427, 1525, 2135, 7607, 10675, 38035, 53249, 190175, 266245, 464027, 1331225, 2320135, 3248189, 11600675, 16240945, 81204725]

約数ペア:

[(1, 81204725), (5, 16240945), (7, 11600675), (25, 3248189), (35, 2320135), (61, 1331225), (175, 464027), (305, 266245), (427, 190175), (1525, 53249), (2135, 38035), (7607, 10675)]