208990325

素因数分解:

$5^2\times {\mathrm{41}}^2\times {\mathrm{4973}}^1$

素因数の和:5065

約数の個数: 18

約数和(自身を含む): 265676262

約数和(自身を除く): 56685937

約数列:

[1, 5, 25, 41, 205, 1025, 1681, 4973, 8405, 24865, 42025, 124325, 203893, 1019465, 5097325, 8359613, 41798065, 208990325]

約数ペア:

[(1, 208990325), (5, 41798065), (25, 8359613), (41, 5097325), (205, 1019465), (1025, 203893), (1681, 124325), (4973, 42025), (8405, 24865)]