21399364

素因数分解:

$2^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{7879}}^1$

素因数の和:7987

約数の個数: 24

約数和(自身を含む): 43245440

約数和(自身を除く): 21846076

約数列:

[1, 2, 4, 7, 14, 28, 97, 194, 388, 679, 1358, 2716, 7879, 15758, 31516, 55153, 110306, 220612, 764263, 1528526, 3057052, 5349841, 10699682, 21399364]

約数ペア:

[(1, 21399364), (2, 10699682), (4, 5349841), (7, 3057052), (14, 1528526), (28, 764263), (97, 220612), (194, 110306), (388, 55153), (679, 31516), (1358, 15758), (2716, 7879)]