20994880

素因数分解:

$2^6\times 5^1\times {\mathrm{65609}}^1$

素因数の和:65626

約数の個数: 28

約数和(自身を含む): 49994820

約数和(自身を除く): 28999940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65609, 131218, 262436, 328045, 524872, 656090, 1049744, 1312180, 2099488, 2624360, 4198976, 5248720, 10497440, 20994880]

約数ペア:

[(1, 20994880), (2, 10497440), (4, 5248720), (5, 4198976), (8, 2624360), (10, 2099488), (16, 1312180), (20, 1049744), (32, 656090), (40, 524872), (64, 328045), (80, 262436), (160, 131218), (320, 65609)]