79270720

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:240

約数の個数: 112

約数和(自身を含む): 199558656

約数和(自身を除く): 120287936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 61, 62, 64, 80, 122, 124, 131, 155, 160, 244, 248, 262, 305, 310, 320, 488, 496, 524, 610, 620, 655, 976, 992, 1048, 1220, 1240, 1310, 1891, 1952, 1984, 2096, 2440, 2480, 2620, 3782, 3904, 4061, 4192, 4880, 4960, 5240, 7564, 7991, 8122, 8384, 9455, 9760, 9920, 10480, 15128, 15982, 16244, 18910, 19520, 20305, 20960, 30256, 31964, 32488, 37820, 39955, 40610, 41920, 60512, 63928, 64976, 75640, 79910, 81220, 121024, 127856, 129952, 151280, 159820, 162440, 247721, 255712, 259904, 302560, 319640, 324880, 495442, 511424, 605120, 639280, 649760, 990884, 1238605, 1278560, 1299520, 1981768, 2477210, 2557120, 3963536, 4954420, 7927072, 9908840, 15854144, 19817680, 39635360, 79270720]

約数ペア:

[(1, 79270720), (2, 39635360), (4, 19817680), (5, 15854144), (8, 9908840), (10, 7927072), (16, 4954420), (20, 3963536), (31, 2557120), (32, 2477210), (40, 1981768), (61, 1299520), (62, 1278560), (64, 1238605), (80, 990884), (122, 649760), (124, 639280), (131, 605120), (155, 511424), (160, 495442), (244, 324880), (248, 319640), (262, 302560), (305, 259904), (310, 255712), (320, 247721), (488, 162440), (496, 159820), (524, 151280), (610, 129952), (620, 127856), (655, 121024), (976, 81220), (992, 79910), (1048, 75640), (1220, 64976), (1240, 63928), (1310, 60512), (1891, 41920), (1952, 40610), (1984, 39955), (2096, 37820), (2440, 32488), (2480, 31964), (2620, 30256), (3782, 20960), (3904, 20305), (4061, 19520), (4192, 18910), (4880, 16244), (4960, 15982), (5240, 15128), (7564, 10480), (7991, 9920), (8122, 9760), (8384, 9455)]