21351358

素因数分解:

$2^1\times 7^2\times {\mathrm{223}}^1\times {\mathrm{977}}^1$

素因数の和:1216

約数の個数: 24

約数和(自身を含む): 37461312

約数和(自身を除く): 16109954

約数列:

[1, 2, 7, 14, 49, 98, 223, 446, 977, 1561, 1954, 3122, 6839, 10927, 13678, 21854, 47873, 95746, 217871, 435742, 1525097, 3050194, 10675679, 21351358]

約数ペア:

[(1, 21351358), (2, 10675679), (7, 3050194), (14, 1525097), (49, 435742), (98, 217871), (223, 95746), (446, 47873), (977, 21854), (1561, 13678), (1954, 10927), (3122, 6839)]