21066880

素因数分解:

$2^7\times 5^1\times {\mathrm{32917}}^1$

素因数の和:32936

約数の個数: 32

約数和(自身を含む): 50364540

約数和(自身を除く): 29297660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32917, 65834, 131668, 164585, 263336, 329170, 526672, 658340, 1053344, 1316680, 2106688, 2633360, 4213376, 5266720, 10533440, 21066880]

約数ペア:

[(1, 21066880), (2, 10533440), (4, 5266720), (5, 4213376), (8, 2633360), (10, 2106688), (16, 1316680), (20, 1053344), (32, 658340), (40, 526672), (64, 329170), (80, 263336), (128, 164585), (160, 131668), (320, 65834), (640, 32917)]