78220520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1087}}^1$

素因数の和:1362

約数の個数: 64

約数和(自身を含む): 202106880

約数和(自身を除く): 123886360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 257, 280, 514, 1028, 1087, 1285, 1799, 2056, 2174, 2570, 3598, 4348, 5140, 5435, 7196, 7609, 8696, 8995, 10280, 10870, 14392, 15218, 17990, 21740, 30436, 35980, 38045, 43480, 60872, 71960, 76090, 152180, 279359, 304360, 558718, 1117436, 1396795, 1955513, 2234872, 2793590, 3911026, 5587180, 7822052, 9777565, 11174360, 15644104, 19555130, 39110260, 78220520]

約数ペア:

[(1, 78220520), (2, 39110260), (4, 19555130), (5, 15644104), (7, 11174360), (8, 9777565), (10, 7822052), (14, 5587180), (20, 3911026), (28, 2793590), (35, 2234872), (40, 1955513), (56, 1396795), (70, 1117436), (140, 558718), (257, 304360), (280, 279359), (514, 152180), (1028, 76090), (1087, 71960), (1285, 60872), (1799, 43480), (2056, 38045), (2174, 35980), (2570, 30436), (3598, 21740), (4348, 17990), (5140, 15218), (5435, 14392), (7196, 10870), (7609, 10280), (8696, 8995)]