78907520

素因数分解:

$2^7\times 5^1\times {\mathrm{139}}^1\times {\mathrm{887}}^1$

素因数の和:1045

約数の個数: 64

約数和(自身を含む): 190209600

約数和(自身を除く): 111302080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 139, 160, 278, 320, 556, 640, 695, 887, 1112, 1390, 1774, 2224, 2780, 3548, 4435, 4448, 5560, 7096, 8870, 8896, 11120, 14192, 17740, 17792, 22240, 28384, 35480, 44480, 56768, 70960, 88960, 113536, 123293, 141920, 246586, 283840, 493172, 567680, 616465, 986344, 1232930, 1972688, 2465860, 3945376, 4931720, 7890752, 9863440, 15781504, 19726880, 39453760, 78907520]

約数ペア:

[(1, 78907520), (2, 39453760), (4, 19726880), (5, 15781504), (8, 9863440), (10, 7890752), (16, 4931720), (20, 3945376), (32, 2465860), (40, 1972688), (64, 1232930), (80, 986344), (128, 616465), (139, 567680), (160, 493172), (278, 283840), (320, 246586), (556, 141920), (640, 123293), (695, 113536), (887, 88960), (1112, 70960), (1390, 56768), (1774, 44480), (2224, 35480), (2780, 28384), (3548, 22240), (4435, 17792), (4448, 17740), (5560, 14192), (7096, 11120), (8870, 8896)]