20397400

素因数分解:

$2^3\times 5^2\times {\mathrm{101987}}^1$

素因数の和:102003

約数の個数: 24

約数和(自身を含む): 47424420

約数和(自身を除く): 27027020

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 101987, 203974, 407948, 509935, 815896, 1019870, 2039740, 2549675, 4079480, 5099350, 10198700, 20397400]

約数ペア:

[(1, 20397400), (2, 10198700), (4, 5099350), (5, 4079480), (8, 2549675), (10, 2039740), (20, 1019870), (25, 815896), (40, 509935), (50, 407948), (100, 203974), (200, 101987)]