1644638080

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{409}}^1$

素因数の和:592

約数の個数: 128

約数和(自身を含む): 4044830400

約数和(自身を除く): 2400192320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 103, 122, 128, 160, 206, 244, 305, 320, 409, 412, 488, 515, 610, 640, 818, 824, 976, 1030, 1220, 1636, 1648, 1952, 2045, 2060, 2440, 3272, 3296, 3904, 4090, 4120, 4880, 6283, 6544, 6592, 7808, 8180, 8240, 9760, 12566, 13088, 13184, 16360, 16480, 19520, 24949, 25132, 26176, 31415, 32720, 32960, 39040, 42127, 49898, 50264, 52352, 62830, 65440, 65920, 84254, 99796, 100528, 124745, 125660, 130880, 168508, 199592, 201056, 210635, 249490, 251320, 261760, 337016, 399184, 402112, 421270, 498980, 502640, 674032, 798368, 804224, 842540, 997960, 1005280, 1348064, 1596736, 1685080, 1995920, 2010560, 2569747, 2696128, 3193472, 3370160, 3991840, 4021120, 5139494, 5392256, 6740320, 7983680, 10278988, 12848735, 13480640, 15967360, 20557976, 25697470, 26961280, 41115952, 51394940, 82231904, 102789880, 164463808, 205579760, 328927616, 411159520, 822319040, 1644638080]

約数ペア:

[(1, 1644638080), (2, 822319040), (4, 411159520), (5, 328927616), (8, 205579760), (10, 164463808), (16, 102789880), (20, 82231904), (32, 51394940), (40, 41115952), (61, 26961280), (64, 25697470), (80, 20557976), (103, 15967360), (122, 13480640), (128, 12848735), (160, 10278988), (206, 7983680), (244, 6740320), (305, 5392256), (320, 5139494), (409, 4021120), (412, 3991840), (488, 3370160), (515, 3193472), (610, 2696128), (640, 2569747), (818, 2010560), (824, 1995920), (976, 1685080), (1030, 1596736), (1220, 1348064), (1636, 1005280), (1648, 997960), (1952, 842540), (2045, 804224), (2060, 798368), (2440, 674032), (3272, 502640), (3296, 498980), (3904, 421270), (4090, 402112), (4120, 399184), (4880, 337016), (6283, 261760), (6544, 251320), (6592, 249490), (7808, 210635), (8180, 201056), (8240, 199592), (9760, 168508), (12566, 130880), (13088, 125660), (13184, 124745), (16360, 100528), (16480, 99796), (19520, 84254), (24949, 65920), (25132, 65440), (26176, 62830), (31415, 52352), (32720, 50264), (32960, 49898), (39040, 42127)]