661280

素因数分解:

$2^5\times 5^1\times {\mathrm{4133}}^1$

素因数の和:4148

約数の個数: 24

約数和(自身を含む): 1562652

約数和(自身を除く): 901372

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 4133, 8266, 16532, 20665, 33064, 41330, 66128, 82660, 132256, 165320, 330640, 661280]

約数ペア:

[(1, 661280), (2, 330640), (4, 165320), (5, 132256), (8, 82660), (10, 66128), (16, 41330), (20, 33064), (32, 20665), (40, 16532), (80, 8266), (160, 4133)]