21340986

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{457}}^1$

素因数の和:686

約数の個数: 32

約数和(自身を含む): 44011968

約数和(自身を除く): 22670982

約数列:

[1, 2, 3, 6, 43, 86, 129, 181, 258, 362, 457, 543, 914, 1086, 1371, 2742, 7783, 15566, 19651, 23349, 39302, 46698, 58953, 82717, 117906, 165434, 248151, 496302, 3556831, 7113662, 10670493, 21340986]

約数ペア:

[(1, 21340986), (2, 10670493), (3, 7113662), (6, 3556831), (43, 496302), (86, 248151), (129, 165434), (181, 117906), (258, 82717), (362, 58953), (457, 46698), (543, 39302), (914, 23349), (1086, 19651), (1371, 15566), (2742, 7783)]