78661280

素因数分解:

$2^5\times 5^1\times {\mathrm{491633}}^1$

素因数の和:491648

約数の個数: 24

約数和(自身を含む): 185837652

約数和(自身を除く): 107176372

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 491633, 983266, 1966532, 2458165, 3933064, 4916330, 7866128, 9832660, 15732256, 19665320, 39330640, 78661280]

約数ペア:

[(1, 78661280), (2, 39330640), (4, 19665320), (5, 15732256), (8, 9832660), (10, 7866128), (16, 4916330), (20, 3933064), (32, 2458165), (40, 1966532), (80, 983266), (160, 491633)]