21411248

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31121}}^1$

素因数の和:31172

約数の個数: 20

約数和(自身を含む): 42450408

約数和(自身を除く): 21039160

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31121, 62242, 124484, 248968, 497936, 1338203, 2676406, 5352812, 10705624, 21411248]

約数ペア:

[(1, 21411248), (2, 10705624), (4, 5352812), (8, 2676406), (16, 1338203), (43, 497936), (86, 248968), (172, 124484), (344, 62242), (688, 31121)]