20053480

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 47044800

約数和(自身を除く): 26991320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 89, 131, 172, 178, 215, 262, 344, 356, 430, 445, 524, 655, 712, 860, 890, 1048, 1310, 1720, 1780, 2620, 3560, 3827, 5240, 5633, 7654, 11266, 11659, 15308, 19135, 22532, 23318, 28165, 30616, 38270, 45064, 46636, 56330, 58295, 76540, 93272, 112660, 116590, 153080, 225320, 233180, 466360, 501337, 1002674, 2005348, 2506685, 4010696, 5013370, 10026740, 20053480]

約数ペア:

[(1, 20053480), (2, 10026740), (4, 5013370), (5, 4010696), (8, 2506685), (10, 2005348), (20, 1002674), (40, 501337), (43, 466360), (86, 233180), (89, 225320), (131, 153080), (172, 116590), (178, 112660), (215, 93272), (262, 76540), (344, 58295), (356, 56330), (430, 46636), (445, 45064), (524, 38270), (655, 30616), (712, 28165), (860, 23318), (890, 22532), (1048, 19135), (1310, 15308), (1720, 11659), (1780, 11266), (2620, 7654), (3560, 5633), (3827, 5240)]