20906560

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{827}}^1$

素因数の和:923

約数の個数: 56

約数和(自身を含む): 50474880

約数和(自身を除く): 29568320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 790, 827, 1264, 1580, 1654, 2528, 3160, 3308, 4135, 5056, 6320, 6616, 8270, 12640, 13232, 16540, 25280, 26464, 33080, 52928, 65333, 66160, 130666, 132320, 261332, 264640, 326665, 522664, 653330, 1045328, 1306660, 2090656, 2613320, 4181312, 5226640, 10453280, 20906560]

約数ペア:

[(1, 20906560), (2, 10453280), (4, 5226640), (5, 4181312), (8, 2613320), (10, 2090656), (16, 1306660), (20, 1045328), (32, 653330), (40, 522664), (64, 326665), (79, 264640), (80, 261332), (158, 132320), (160, 130666), (316, 66160), (320, 65333), (395, 52928), (632, 33080), (790, 26464), (827, 25280), (1264, 16540), (1580, 13232), (1654, 12640), (2528, 8270), (3160, 6616), (3308, 6320), (4135, 5056)]