21638718

素因数分解:

$2^1\times 3^3\times {\mathrm{43}}^1\times {\mathrm{9319}}^1$

素因数の和:9373

約数の個数: 32

約数和(自身を含む): 49209600

約数和(自身を除く): 27570882

約数列:

[1, 2, 3, 6, 9, 18, 27, 43, 54, 86, 129, 258, 387, 774, 1161, 2322, 9319, 18638, 27957, 55914, 83871, 167742, 251613, 400717, 503226, 801434, 1202151, 2404302, 3606453, 7212906, 10819359, 21638718]

約数ペア:

[(1, 21638718), (2, 10819359), (3, 7212906), (6, 3606453), (9, 2404302), (18, 1202151), (27, 801434), (43, 503226), (54, 400717), (86, 251613), (129, 167742), (258, 83871), (387, 55914), (774, 27957), (1161, 18638), (2322, 9319)]