19800970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{1481}}^1$

素因数の和:1686

約数の個数: 32

約数和(自身を含む): 40974336

約数和(自身を除く): 21173366

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 191, 382, 955, 1337, 1481, 1910, 2674, 2962, 6685, 7405, 10367, 13370, 14810, 20734, 51835, 103670, 282871, 565742, 1414355, 1980097, 2828710, 3960194, 9900485, 19800970]

約数ペア:

[(1, 19800970), (2, 9900485), (5, 3960194), (7, 2828710), (10, 1980097), (14, 1414355), (35, 565742), (70, 282871), (191, 103670), (382, 51835), (955, 20734), (1337, 14810), (1481, 13370), (1910, 10367), (2674, 7405), (2962, 6685)]