39987280

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5153}}^1$

素因数の和:5263

約数の個数: 40

約数和(自身を含む): 93947112

約数和(自身を除く): 53959832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 3880, 5153, 7760, 10306, 20612, 25765, 41224, 51530, 82448, 103060, 206120, 412240, 499841, 999682, 1999364, 2499205, 3998728, 4998410, 7997456, 9996820, 19993640, 39987280]

約数ペア:

[(1, 39987280), (2, 19993640), (4, 9996820), (5, 7997456), (8, 4998410), (10, 3998728), (16, 2499205), (20, 1999364), (40, 999682), (80, 499841), (97, 412240), (194, 206120), (388, 103060), (485, 82448), (776, 51530), (970, 41224), (1552, 25765), (1940, 20612), (3880, 10306), (5153, 7760)]