12388840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 29352960

約数和(自身を除く): 16964120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 97, 103, 124, 155, 194, 206, 248, 310, 388, 412, 485, 515, 620, 776, 824, 970, 1030, 1240, 1940, 2060, 3007, 3193, 3880, 4120, 6014, 6386, 9991, 12028, 12772, 15035, 15965, 19982, 24056, 25544, 30070, 31930, 39964, 49955, 60140, 63860, 79928, 99910, 120280, 127720, 199820, 309721, 399640, 619442, 1238884, 1548605, 2477768, 3097210, 6194420, 12388840]

約数ペア:

[(1, 12388840), (2, 6194420), (4, 3097210), (5, 2477768), (8, 1548605), (10, 1238884), (20, 619442), (31, 399640), (40, 309721), (62, 199820), (97, 127720), (103, 120280), (124, 99910), (155, 79928), (194, 63860), (206, 60140), (248, 49955), (310, 39964), (388, 31930), (412, 30070), (485, 25544), (515, 24056), (620, 19982), (776, 15965), (824, 15035), (970, 12772), (1030, 12028), (1240, 9991), (1940, 6386), (2060, 6014), (3007, 4120), (3193, 3880)]