20452400

素因数分解:

$2^4\times 5^2\times {\mathrm{51131}}^1$

素因数の和:51149

約数の個数: 30

約数和(自身を含む): 49137852

約数和(自身を除く): 28685452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51131, 102262, 204524, 255655, 409048, 511310, 818096, 1022620, 1278275, 2045240, 2556550, 4090480, 5113100, 10226200, 20452400]

約数ペア:

[(1, 20452400), (2, 10226200), (4, 5113100), (5, 4090480), (8, 2556550), (10, 2045240), (16, 1278275), (20, 1022620), (25, 818096), (40, 511310), (50, 409048), (80, 255655), (100, 204524), (200, 102262), (400, 51131)]