25509820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{709}}^1$

素因数の和:982

約数の個数: 48

約数和(自身を含む): 61548480

約数和(自身を除く): 36038660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 514, 709, 1028, 1285, 1418, 1799, 2570, 2836, 3545, 3598, 4963, 5140, 7090, 7196, 8995, 9926, 14180, 17990, 19852, 24815, 35980, 49630, 99260, 182213, 364426, 728852, 911065, 1275491, 1822130, 2550982, 3644260, 5101964, 6377455, 12754910, 25509820]

約数ペア:

[(1, 25509820), (2, 12754910), (4, 6377455), (5, 5101964), (7, 3644260), (10, 2550982), (14, 1822130), (20, 1275491), (28, 911065), (35, 728852), (70, 364426), (140, 182213), (257, 99260), (514, 49630), (709, 35980), (1028, 24815), (1285, 19852), (1418, 17990), (1799, 14180), (2570, 9926), (2836, 8995), (3545, 7196), (3598, 7090), (4963, 5140)]