20191640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1949}}^1$

素因数の和:2004

約数の個数: 64

約数和(自身を含む): 53352000

約数和(自身を除く): 33160360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 1949, 2072, 2590, 3898, 5180, 7796, 9745, 10360, 13643, 15592, 19490, 27286, 38980, 54572, 68215, 72113, 77960, 109144, 136430, 144226, 272860, 288452, 360565, 504791, 545720, 576904, 721130, 1009582, 1442260, 2019164, 2523955, 2884520, 4038328, 5047910, 10095820, 20191640]

約数ペア:

[(1, 20191640), (2, 10095820), (4, 5047910), (5, 4038328), (7, 2884520), (8, 2523955), (10, 2019164), (14, 1442260), (20, 1009582), (28, 721130), (35, 576904), (37, 545720), (40, 504791), (56, 360565), (70, 288452), (74, 272860), (140, 144226), (148, 136430), (185, 109144), (259, 77960), (280, 72113), (296, 68215), (370, 54572), (518, 38980), (740, 27286), (1036, 19490), (1295, 15592), (1480, 13643), (1949, 10360), (2072, 9745), (2590, 7796), (3898, 5180)]