818219840

素因数分解:

$2^6\times 5^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1\times {\mathrm{251}}^1$

素因数の和:496

約数の個数: 112

約数和(自身を含む): 2000121984

約数和(自身を除く): 1181902144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 160, 167, 244, 251, 305, 320, 334, 488, 502, 610, 668, 835, 976, 1004, 1220, 1255, 1336, 1670, 1952, 2008, 2440, 2510, 2672, 3340, 3904, 4016, 4880, 5020, 5344, 6680, 8032, 9760, 10040, 10187, 10688, 13360, 15311, 16064, 19520, 20080, 20374, 26720, 30622, 40160, 40748, 41917, 50935, 53440, 61244, 76555, 80320, 81496, 83834, 101870, 122488, 153110, 162992, 167668, 203740, 209585, 244976, 306220, 325984, 335336, 407480, 419170, 489952, 612440, 651968, 670672, 814960, 838340, 979904, 1224880, 1341344, 1629920, 1676680, 2449760, 2556937, 2682688, 3259840, 3353360, 4899520, 5113874, 6706720, 10227748, 12784685, 13413440, 20455496, 25569370, 40910992, 51138740, 81821984, 102277480, 163643968, 204554960, 409109920, 818219840]

約数ペア:

[(1, 818219840), (2, 409109920), (4, 204554960), (5, 163643968), (8, 102277480), (10, 81821984), (16, 51138740), (20, 40910992), (32, 25569370), (40, 20455496), (61, 13413440), (64, 12784685), (80, 10227748), (122, 6706720), (160, 5113874), (167, 4899520), (244, 3353360), (251, 3259840), (305, 2682688), (320, 2556937), (334, 2449760), (488, 1676680), (502, 1629920), (610, 1341344), (668, 1224880), (835, 979904), (976, 838340), (1004, 814960), (1220, 670672), (1255, 651968), (1336, 612440), (1670, 489952), (1952, 419170), (2008, 407480), (2440, 335336), (2510, 325984), (2672, 306220), (3340, 244976), (3904, 209585), (4016, 203740), (4880, 167668), (5020, 162992), (5344, 153110), (6680, 122488), (8032, 101870), (9760, 83834), (10040, 81496), (10187, 80320), (10688, 76555), (13360, 61244), (15311, 53440), (16064, 50935), (19520, 41917), (20080, 40748), (20374, 40160), (26720, 30622)]