388243660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{197}}^1\times {\mathrm{2011}}^1$

素因数の和:2231

約数の個数: 72

約数和(自身を含む): 953712144

約数和(自身を除く): 565468484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 197, 245, 394, 490, 788, 980, 985, 1379, 1970, 2011, 2758, 3940, 4022, 5516, 6895, 8044, 9653, 10055, 13790, 14077, 19306, 20110, 27580, 28154, 38612, 40220, 48265, 56308, 70385, 96530, 98539, 140770, 193060, 197078, 281540, 394156, 396167, 492695, 792334, 985390, 1584668, 1970780, 1980835, 2773169, 3961670, 5546338, 7923340, 11092676, 13865845, 19412183, 27731690, 38824366, 55463380, 77648732, 97060915, 194121830, 388243660]

約数ペア:

[(1, 388243660), (2, 194121830), (4, 97060915), (5, 77648732), (7, 55463380), (10, 38824366), (14, 27731690), (20, 19412183), (28, 13865845), (35, 11092676), (49, 7923340), (70, 5546338), (98, 3961670), (140, 2773169), (196, 1980835), (197, 1970780), (245, 1584668), (394, 985390), (490, 792334), (788, 492695), (980, 396167), (985, 394156), (1379, 281540), (1970, 197078), (2011, 193060), (2758, 140770), (3940, 98539), (4022, 96530), (5516, 70385), (6895, 56308), (8044, 48265), (9653, 40220), (10055, 38612), (13790, 28154), (14077, 27580), (19306, 20110)]