81778760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{3011}}^1$

素因数の和:3126

約数の個数: 64

約数和(自身を含む): 212526720

約数和(自身を除く): 130747960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 97, 140, 194, 280, 388, 485, 679, 776, 970, 1358, 1940, 2716, 3011, 3395, 3880, 5432, 6022, 6790, 12044, 13580, 15055, 21077, 24088, 27160, 30110, 42154, 60220, 84308, 105385, 120440, 168616, 210770, 292067, 421540, 584134, 843080, 1168268, 1460335, 2044469, 2336536, 2920670, 4088938, 5841340, 8177876, 10222345, 11682680, 16355752, 20444690, 40889380, 81778760]

約数ペア:

[(1, 81778760), (2, 40889380), (4, 20444690), (5, 16355752), (7, 11682680), (8, 10222345), (10, 8177876), (14, 5841340), (20, 4088938), (28, 2920670), (35, 2336536), (40, 2044469), (56, 1460335), (70, 1168268), (97, 843080), (140, 584134), (194, 421540), (280, 292067), (388, 210770), (485, 168616), (679, 120440), (776, 105385), (970, 84308), (1358, 60220), (1940, 42154), (2716, 30110), (3011, 27160), (3395, 24088), (3880, 21077), (5432, 15055), (6022, 13580), (6790, 12044)]