21903887090

素因数分解:

$2^1\times 5^1\times {\mathrm{15959}}^1\times {\mathrm{137251}}^1$

素因数の和:153217

約数の個数: 16

約数和(自身を含む): 39429754560

約数和(自身を除く): 17525867470

約数列:

[1, 2, 5, 10, 15959, 31918, 79795, 137251, 159590, 274502, 686255, 1372510, 2190388709, 4380777418, 10951943545, 21903887090]

約数ペア:

[(1, 21903887090), (2, 10951943545), (5, 4380777418), (10, 2190388709), (15959, 1372510), (31918, 686255), (79795, 274502), (137251, 159590)]