20417440

素因数分解:

$2^5\times 5^1\times {\mathrm{127609}}^1$

素因数の和:127624

約数の個数: 24

約数和(自身を含む): 48236580

約数和(自身を除く): 27819140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 127609, 255218, 510436, 638045, 1020872, 1276090, 2041744, 2552180, 4083488, 5104360, 10208720, 20417440]

約数ペア:

[(1, 20417440), (2, 10208720), (4, 5104360), (5, 4083488), (8, 2552180), (10, 2041744), (16, 1276090), (20, 1020872), (32, 638045), (40, 510436), (80, 255218), (160, 127609)]