1291245290

素因数分解:

$2^1\times 5^1\times {\mathrm{1291}}^1\times {\mathrm{100019}}^1$

素因数の和:101317

約数の個数: 16

約数和(自身を含む): 2326065120

約数和(自身を除く): 1034819830

約数列:

[1, 2, 5, 10, 1291, 2582, 6455, 12910, 100019, 200038, 500095, 1000190, 129124529, 258249058, 645622645, 1291245290]

約数ペア:

[(1, 1291245290), (2, 645622645), (5, 258249058), (10, 129124529), (1291, 1000190), (2582, 500095), (6455, 200038), (12910, 100019)]