21587696

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103787}}^1$

素因数の和:103808

約数の個数: 20

約数和(自身を含む): 45043992

約数和(自身を除く): 23456296

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103787, 207574, 415148, 830296, 1349231, 1660592, 2698462, 5396924, 10793848, 21587696]

約数ペア:

[(1, 21587696), (2, 10793848), (4, 5396924), (8, 2698462), (13, 1660592), (16, 1349231), (26, 830296), (52, 415148), (104, 207574), (208, 103787)]