2116720640

素因数分解:

$2^{11}\times 5^1\times {\mathrm{421}}^1\times {\mathrm{491}}^1$

素因数の和:939

約数の個数: 96

約数和(自身を含む): 5101321680

約数和(自身を除く): 2984601040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 421, 491, 512, 640, 842, 982, 1024, 1280, 1684, 1964, 2048, 2105, 2455, 2560, 3368, 3928, 4210, 4910, 5120, 6736, 7856, 8420, 9820, 10240, 13472, 15712, 16840, 19640, 26944, 31424, 33680, 39280, 53888, 62848, 67360, 78560, 107776, 125696, 134720, 157120, 206711, 215552, 251392, 269440, 314240, 413422, 431104, 502784, 538880, 628480, 826844, 862208, 1005568, 1033555, 1077760, 1256960, 1653688, 2067110, 2155520, 2513920, 3307376, 4134220, 4311040, 5027840, 6614752, 8268440, 13229504, 16536880, 26459008, 33073760, 52918016, 66147520, 105836032, 132295040, 211672064, 264590080, 423344128, 529180160, 1058360320, 2116720640]

約数ペア:

[(1, 2116720640), (2, 1058360320), (4, 529180160), (5, 423344128), (8, 264590080), (10, 211672064), (16, 132295040), (20, 105836032), (32, 66147520), (40, 52918016), (64, 33073760), (80, 26459008), (128, 16536880), (160, 13229504), (256, 8268440), (320, 6614752), (421, 5027840), (491, 4311040), (512, 4134220), (640, 3307376), (842, 2513920), (982, 2155520), (1024, 2067110), (1280, 1653688), (1684, 1256960), (1964, 1077760), (2048, 1033555), (2105, 1005568), (2455, 862208), (2560, 826844), (3368, 628480), (3928, 538880), (4210, 502784), (4910, 431104), (5120, 413422), (6736, 314240), (7856, 269440), (8420, 251392), (9820, 215552), (10240, 206711), (13472, 157120), (15712, 134720), (16840, 125696), (19640, 107776), (26944, 78560), (31424, 67360), (33680, 62848), (39280, 53888)]