21291244891

素因数分解:

$7^1\times {\mathrm{79}}^1\times {\mathrm{541}}^1\times {\mathrm{71167}}^1$

素因数の和:71794

約数の個数: 16

約数和(自身を含む): 24686755840

約数和(自身を除く): 3395510949

約数列:

[1, 7, 79, 541, 553, 3787, 42739, 71167, 299173, 498169, 5622193, 38501347, 39355351, 269509429, 3041606413, 21291244891]

約数ペア:

[(1, 21291244891), (7, 3041606413), (79, 269509429), (541, 39355351), (553, 38501347), (3787, 5622193), (42739, 498169), (71167, 299173)]