51019640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{709}}^1$

素因数の和:984

約数の個数: 64

約数和(自身を含む): 131889600

約数和(自身を除く): 80869960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 257, 280, 514, 709, 1028, 1285, 1418, 1799, 2056, 2570, 2836, 3545, 3598, 4963, 5140, 5672, 7090, 7196, 8995, 9926, 10280, 14180, 14392, 17990, 19852, 24815, 28360, 35980, 39704, 49630, 71960, 99260, 182213, 198520, 364426, 728852, 911065, 1275491, 1457704, 1822130, 2550982, 3644260, 5101964, 6377455, 7288520, 10203928, 12754910, 25509820, 51019640]

約数ペア:

[(1, 51019640), (2, 25509820), (4, 12754910), (5, 10203928), (7, 7288520), (8, 6377455), (10, 5101964), (14, 3644260), (20, 2550982), (28, 1822130), (35, 1457704), (40, 1275491), (56, 911065), (70, 728852), (140, 364426), (257, 198520), (280, 182213), (514, 99260), (709, 71960), (1028, 49630), (1285, 39704), (1418, 35980), (1799, 28360), (2056, 24815), (2570, 19852), (2836, 17990), (3545, 14392), (3598, 14180), (4963, 10280), (5140, 9926), (5672, 8995), (7090, 7196)]