128523820

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{28817}}^1$

素因数の和:29049

約数の個数: 24

約数和(自身を含む): 271119744

約数和(自身を除く): 142595924

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 28817, 57634, 115268, 144085, 288170, 576340, 6426191, 12852382, 25704764, 32130955, 64261910, 128523820]

約数ペア:

[(1, 128523820), (2, 64261910), (4, 32130955), (5, 25704764), (10, 12852382), (20, 6426191), (223, 576340), (446, 288170), (892, 144085), (1115, 115268), (2230, 57634), (4460, 28817)]