21039356

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{1493}}^1$

素因数の和:1781

約数の個数: 24

約数和(自身を含む): 39824064

約数和(自身を除く): 18784708

約数列:

[1, 2, 4, 13, 26, 52, 271, 542, 1084, 1493, 2986, 3523, 5972, 7046, 14092, 19409, 38818, 77636, 404603, 809206, 1618412, 5259839, 10519678, 21039356]

約数ペア:

[(1, 21039356), (2, 10519678), (4, 5259839), (13, 1618412), (26, 809206), (52, 404603), (271, 77636), (542, 38818), (1084, 19409), (1493, 14092), (2986, 7046), (3523, 5972)]