654339980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{20959}}^1$

素因数の和:21198

約数の個数: 48

約数和(自身を含む): 1577533440

約数和(自身を除く): 923193460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 892, 1115, 1561, 2230, 3122, 4460, 6244, 7805, 15610, 20959, 31220, 41918, 83836, 104795, 146713, 209590, 293426, 419180, 586852, 733565, 1467130, 2934260, 4673857, 9347714, 18695428, 23369285, 32716999, 46738570, 65433998, 93477140, 130867996, 163584995, 327169990, 654339980]

約数ペア:

[(1, 654339980), (2, 327169990), (4, 163584995), (5, 130867996), (7, 93477140), (10, 65433998), (14, 46738570), (20, 32716999), (28, 23369285), (35, 18695428), (70, 9347714), (140, 4673857), (223, 2934260), (446, 1467130), (892, 733565), (1115, 586852), (1561, 419180), (2230, 293426), (3122, 209590), (4460, 146713), (6244, 104795), (7805, 83836), (15610, 41918), (20959, 31220)]